Learn more about image processing, regionprops, bwdistgeodesic, mask Image Processing ToolboxThis works nicely but I end up with the same problem, lots of vectors and no good way to select/combine. I have tried using bwdist and bwdistgeodesic to solve this problem, my first thought was to take the difference between the maps produced using these which would give me a map of all pixels where the euclidean distance and distance traversing around walls are the same (directly visible). Or you can use the Pythagorean theorem and the coordinates from bwboundaries if you want an "as the crow flies" distance, which in general is different than you'll get from either bwdist function. . In the bwdistgeodesic function, what is it expecting for the variable "mask"? How could I use image analysis to generate said mask? I've looked into using regionprops 'Extrema' property, but since I'm not sure what the "mask" variable is in bwdistgeodesic, I'm not sure how I would use the x,y dimensions from 'Extrema' in a mask. José-Luis on 7 Jul 2016. The second example might interest you. That is to say: dist_A-B = min (geodist (A, B1), geodist (A, B2. Then take the max value of that. Can we do that without using function, just by checking connectivity from end point to branch point. Bugs are not listed here, search and report them on the bug tracker instead. That is to say: dist_A-B = min (geodist (A, B1), geodist (A, B2. Choose between 2 routes. You'll probably need to identify the starting and ending points manually which can be done using ginput() or something slimiar and then finding the. Learn more about loop, image processingi have a 512 x512 matrix image called original, a 20x24 matrix image of a bright oval with lower (darker but not zero) values around the oval in the 20x24 matrix called insert, and the same 20x24 m. Is there a specific reason for this behavior?Learn more about bwdistgeodesic, distance transform, shortest path, seed As the title reads, I would like to use bwdistgeodesic by providing a volume and seed locations. D = bwdistgeodesic(BW,mask) computes the geodesic distance transform, given the binary image BW and the seed locations specified by mask. Thank you for your reply. Then remove those. bwdistgeodesic with Euclidean distance as metric. A couple years ago, I put together a demo to show how to use MATLAB to calculate the tortuosity, or “twistedness,” of blood vessels. Copy. Regions where BW is true represent valid regions that can be traversed in the computation of the distance transform. Or you can use the Pythagorean theorem and the coordinates from bwboundaries if you want an "as the crow flies" distance, which in general is different than you'll get from either bwdist function. skel= bwmorph(ima, 'skel',Inf);Well, I'm not sure what the difference is between what Steve blog's proposes and what Walter proposes, but the idea of using bwdistgeodesic() should be conceptually quite simple. D = bwdistgeodesic( ___ , method ) computes the geodesic distance transform using an alternate distance metric specified by method . T1 = graydist (A,1,1); T2 = graydist (A,3,3); Sum the two transforms to find the minimum path between the seed locations. Sign in to comment. . /Sandra. . sce","path":"src/builder_gateway_cpp. Is there a specific reason for this behavior?An alternative way - kind of a brute force approach - is just to label the image and use the Pythaogrean theorem to find the distance from every pixel of region m to region n. " I've seen some people say "matrix" means only a 2-D array whereas anything 3-D or higher should be called "array" instead of "matrix. D = bwdistgeodesic(BW,mask) computes the geodesic distance transform, given the binary image BW and the seed locations specified by mask. What is the quasi-euclidean distance metric in 3D that is used by the function bwdistgeodesic? I only find documentation of it in 2D. BWDISTGEODESIC starts at a given point, and then calculates the distance as you travel along the path. Learn more about bwdist, bwdistgeodesic, euclidean distance, quasi-euclidean Image Processing Toolbox. Then I multiplied the 2 images. In this post I show another way for solving a maze using watershed. I calculated the distance according to the following equation: I used the MATLAB function graphshortestpath. Well, I'm not sure what the difference is between what Steve blog's proposes and what Walter proposes, but the idea of using bwdistgeodesic() should be conceptually quite simple. Learn more about bwdist, bwdistgeodesic, euclidean distance, quasi-euclidean Image Processing Toolbox. There are two points, a source, say (1,1), and a destination, say (26,35). D = bwdistgeodesic (BW,mask) computes the geodesic distance transform, given the binary image BW and the seed locations specified by mask. Step 3 is to add the distance transforms together. As the title reads, I would like to use bwdistgeodesic by providing a volume and seed locations. Learn more about bwdist, bwdistgeodesic, euclidean distance, quasi-euclidean Image Processing Toolbox. Currently, this function returns the distance to the nearest seed location, but no the index. Start at a endpoint, start walking and find all pixels that are closer than the nearest branchpoint. You can reconstruct that spur-less. Learn more about bwdist, bwdistgeodesic, euclidean distance, quasi-euclidean Image Processing Toolbox. Learn more about bwdist, bwdistgeodesic, euclidean distance, quasi-euclidean Image Processing Toolbox. . all the voxels presen. José-Luis el 7 de Jul. 2. I've been tinkering with this problem off and on for a few days, and I think it might take a few posts to explore some of the interesting ideas and issues posed by this problem. Currently, this function returns the distance to the nearest seed location, but no the index. You can then std() the distances. Show None Hide None. I've been tinkering with this problem off and on for a few days, and I think it might take a few posts to explore some of the interesting ideas and issues posed by this problem. Convolve the 3d skeleton using convn () with a rubik's cube of ones. In any case, bwdistgeodesic should work for that. You'll probably need to identify the starting and ending points manually which can be done using ginput() or something slimiar and then finding the. Khaled Youssef on 8 Jan 2020. In the following code instead of using ‘csvread’ it is recommended to use ‘readmatrix’ commands on the newer versions of MATLAB after 2019a. Copy. So I want to extract the index of the nearest nonzero pixel of a binary image, constrained to a mask. You can use bwdist() or bwdistgeodesic() to get the distance of every pixel in each blob to the closest perimeter point. . 4a). . John is right: distance along a surface can be complicated to compute. . Can bwdistgeodesic be used on a 3D binary image?. Currently, this function returns the distance to the nearest seed location, but no the index. e. bwdistgeodesic will do this for you (metric of every point to an end point). bwdistgeodesic with Euclidean distance as metric. e. I am using a simple definition of tortuosity (tort = distance between endpoints/length of curve). Hello, bwdist allows one to use Euclidean distance as metric while for bwdistgeodesic that is not an option. BWDISTGEODESIC starts at a given point, and then calculates the distance as you travel along the path. Thank you for your reply. Use either bwdist or bwdistgeodesic after having created a mask in which the line pixels are set to 1. Next call bwmorph. Image processing: Determine fiber diameter. Hello ! my goal is to find the location of my object which has the smallest width. You may receive emails. Walter Roberson on 14 Nov 2016. Walter Roberson on 23 Nov 2017 ×This MATLAB function computes the geodesic distance transform, given the binary image BW and the seed locations specified by mask. Learn more about bwdistgeodesic, distance transform, shortest path, seed As the title reads, I would like to use bwdistgeodesic by providing a volume and seed locations. Image Processing Using Matlab - Free download as PDF File (. PixelIdxList {:} %woo! For example, if you choose the first edge point (x1,y1) and you compute bwdistgeodesic (bw,y1,x1,'cityblock'), you will get a distance matrix whose values will be in the range [0 : number of connected components -1]. It is at the corner of a square of white pixels of that dimension, but you will need to do a little work to figure out which corner it is. Copy. Hello, bwdist allows one to use Euclidean distance as metric while for bwdistgeodesic that is not an option. This MATLAB function computes the geodesic distance transform, given the binary image BW and the seed locations specified by mask. You can then std () the distances. Is there a specific reason for this behavior?This is the shortest path problem and there are several algorithms you can search for and learn about. Then take the max value of that. Sign in to comment. It would be nice to write a Matlab-script that could do the image analysis and provides a histogram of the determined fiber thicknesses. Last time, I showed this example of finding the shortest paths between theCan bwdistgeodesic be used on a 3D binary image?. Hello, bwdist allows one to use Euclidean distance as metric while for bwdistgeodesic that is not an option. Regions where BW is true represent valid regions that can be traversed in the computation of the distance transform. How can one find a matrix I, same size as BW, which gives the index of the nearest seed for each pixel? For example, if there are 5 seeds, each pixel in I should have a value (1,2,3,4 or 5) depending on the nearest seed location based on the. As in the following matrix (W), zeros reperesent that those nodes are non-adjacent and other values show weights of the edges corresponding nodes. Second, regardless of which thinning approach you start with, if you calculate a bwdistgeodesic transform on your thinned bw image--using a mask that is true at all of the endpoints and false elsewhere--the longest constrained path will be the one that contains the maximum value in transformed image. Learn more about bwdistgeodesic, distance transform, shortest path, seed As the title reads, I would like to use bwdistgeodesic by providing a volume and seed locations. all the voxels presen. Can bwdistgeodesic be used on a 3D binary image?. Hello, bwdist allows one to use Euclidean distance as metric while for bwdistgeodesic that is not an option. Help Center; Community; MathWorksbwdistgeodesic is not supported for code. Answers (1) Sean de Wolski on 28 Aug 2015. bwdistgeodesic with Euclidean distance as metric. ? Remember Image 2 carries interest point. Hello, bwdist allows one to use Euclidean distance as metric while for bwdistgeodesic that is not an option. bwdistgeodesic with Euclidean distance as metric. This MATLAB function computes the geodesic distance transform, given the binary image BW and the seed locations specified by mask. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Now we have all the pieces we need to use bwdistgeodesic. endpts = ismember (convn (double (skel3d),ones (3,3,3),'same'), [1 2]); 7 Comments. . Khaled Youssef on 8 Jan 2020. e. Learn more about code generation, matlab function, digital image processing, matlab coder, bwdistgeodesicYou can use bwdist() or bwdistgeodesic() to get the distance of every pixel in each blob to the closest perimeter point. On the other hand, distance through 3 space is quite easy to get in this situation, using pdist2() KSSV on 29 Mar 2019. Description. The goal of my problem…thank you for your concern, but in my algorithm i want to fix the D values, D value in the sense D = 2 or 3 i want to traverse on white pixels after every two or three pixels i want to insert a node. Learn more about bwdistgeodesic, distance transform, shortest path, seed As the title reads, I would like to use bwdistgeodesic by providing a volume and seed. Regions where BW is true represent valid regions that can be traversed in the computation of the distance transform. Then put in each branch one at a time and call bwdistgeodesic () to see if they're connected by that branch. Currently, this function returns the distance to the nearest seed. I want to compute the euclidean distance of "some" background pixels to. Learn more about bwdist, bwdistgeodesic, euclidean distance, quasi-euclidean Image Processing Toolbox Hello,. As the title reads, I would like to use bwdistgeodesic by providing a volume and seed locations. Development []. D = bwdistgeodesic (BW,mask) computes the geodesic distance transform, given the binary image BW and the seed locations specified by mask. There is no farthest end-to-end measurement available. 1. . Then remove those pixels. Regions where BW is true represent valid regions that can be traversed in the computation of the distance transform. Copy. bwdistgeodesic with Euclidean distance as metric. skeleton = bwskel(logical(V)); branch_points = bwmorph3(skeleton, 'branchpoints'); end_points = bwmorph3(skeleton, 'endpoints'); branch_length = bwdistgeodesic(branch_points, end_points); Finally, I'll explore how to use a new function, bwdistgeodesic, to find shortest paths when there are constraints on where the paths can go. after traversing on white pixels i will get nodes on word image after getting the nodes on word image, i want to connect the corresponding nodes for more. Thank you for your reply. . In particular the description of how it works is in terms of 2D. Call find() on each to get a list of coordinates, then use sqrt() to get distances. Does a. bwdistgeodesic with Euclidean distance as metric. bwdistgeodesic (helpful link) can help you with that. Choose between 2 routes. I have the node information for the points indicated in yellow, but I would like to obtain the nodes (green) where if connected by straight lines, all pixel. Does a. This function finds the distance to a seed point for each non-zero pixel in a black and white image. Start at a endpoint, start walking and find all pixels that are closer than the nearest branchpoint. 0. 您还可以沿图像中的路径测量单个. Note: in the general case, the centroid of an object can be part of the background, in which case it might not be reachable from points in the object. . sce","contentType":"file. Copy. This MATLAB function computes the geodesic distance transform, given the binary image BW and the seed locations specified by mask. Then access it at the points of interest to find the distance to the line. A tag already exists with the provided branch name. Image Analyst on 29 Mar 2014. Vote. Well, I'm not sure what the difference is between what Steve blog's proposes and what Walter proposes, but the idea of using bwdistgeodesic() should be conceptually quite simple. 0. . T = T1 + T2. Let's try it out. can you show how can i use bwdistgeodesic in the code above. Select objects in binary image. doc bwdistgeodesic %will give you this transform in three dimensions. Is there a specific reason for this behavior?Are the images each 2D ? And the circle should be considered to be a plane and the angle of the piles should be measured relative to that? If so then are you looking for an angle pair (left-right and forward-back) or do you want the center of the base of each pile to be used to calculate a single angle relative to the center projected perpendicular to the. This is the shortest path problem and there are several algorithms you can search for and learn about. Theme. i need help plzz I want to store all my result in the same table. I am trying to create code generated matrixes with the following properties : Each maze has a predefined number of boxes the complexity of the maze is controlled by the number of boxes [i. Enlazar. Find the largest value in D. First you need to get a binary image with the center filled in. Second, regardless of which thinning approach you start with, if you calculate a bwdistgeodesic transform on your thinned bw image--using a mask that is true at all of the endpoints and false elsewhere--the longest constrained path will be the one that contains the maximum value in transformed image. There is no farthest end-to-end measurement available. I have a 3D binary image (effectively a cube) and I want to create a distance map of the image with the starting point(s) being one of the sides/faces of the cube (i. Learn more about code generation, matlab function, digital image processing, matlab coder, bwdistgeodesicI have a 2D image represented by pixels. Calculate the gray-weighted distance transform, specifying the upper left corner and the lower right corner of the square as seed locations. Learn more about tortuosity, distance map, geodesic path, 3d distance map, bwdistgeodesic 3d Hi, I have a 3D binary image (effectively a cube) and I want to create a distance map of the image with the starting point(s) being one of the sides/faces of the cube (i. Answers (1) I think you'll need to get an image of just the branch points. 图像区域，也称为 目标 、 连通分量 或 斑点 ，具有诸如面积、质心、方向和边界框等属性。. Then pick two branchpoints to test and make an image with just those two. Alas this doesn't seem to be the case (see code below). so i think i need to draw straight lines from this point to the edge of the circle, which can be. Regions where BW is true represent valid regions that can be traversed in the computation of the distance transform. You are framing the path traversal as the movement between two points in a binary image while stepping only on the white pixels. Sign in to comment. Teja Muppirala on 14 Mar 2013. Currently, this function returns the distance to the nearest seed location, but no the index. bwdistgeodesic is not supported for code. To use that, you would use a mask which is the binary version of your image. bwdistgeodesic() will give you the shortest path. T1 = graydist (A,1,1); T2 = graydist (A,3,3); Sum the two transforms to find the minimum path between the seed locations. Development Edit. Description example D = bwdist (BW) computes the Euclidean distance transform of the binary image BW . In the bwdistgeodesic function, what is it expecting for the variable "mask"? How could I use image analysis to generate said mask? I've looked into using regionprops 'Extrema' property, but since I'm not sure what the "mask" variable is in bwdistgeodesic, I'm not sure how I would use the x,y dimensions from 'Extrema' in a mask. I want to compute the euclidean distance of "some" background pixels to the objec. But sometimes it has more than 1 possible path and. Theme. all the voxels presen. You will see updates in your activity feed. The bwdistgeodesic function can help you with the 'cityblock' or ' quasi-euclidean ' method : For example, if you choose the first edge point(x1,y1) and you compute bwdistgeodesic(bw,y1,x1,'cityblock'), you will get a distance matrix whose values will be in the range [0 : number of connected components -1]. Help Center; Community; MathWorksFinally, I'll explore how to use a new function, bwdistgeodesic, to find shortest paths when there are constraints on where the paths can go. Walter Roberson on 28 Sep 2015 ×Can bwdistgeodesic be used on a 3D binary image?. As the title reads, I would like to use bwdistgeodesic by providing a volume and seed locations. Figure 4b illustrates the geodesic distance of the cantilever beam results. Sign in to comment. One of the distance metrics options is 'quasi-euclidean' which measures the total Euclidean distance along a set of horizontal, vertical, and diagonal line segments that cicumvent the. bwdistgeodesic is not supported for code. The second module of this webinar should help you get an understanding of the general idea as it is exactly the same thing in two dimensions:can any one tell me how can I find the number of pixel between two point on a closed contour? I know that there are two path between two point on a closed contour. These distance masks were used to sort pixels into 5 µm bins based on their distance from the scratch edge. I did the skeletonization and then I tried to apply bwdist on my image. bwdistgeodesic is not supported for code. This MATLAB function computes the geodesic distance transform, given the binary image BW and the seed locations specified by mask. Then call bwdist to get the distance transform on the binary image. e. Missing functions []I want to make a branching points(red dots) in the given binary image which will be determined as image pixels which are connected to atleast three segment of the given voronoi . So please help meAlternatively, they could just use the IPT function bwdistgeodesic if they want to use a more simple image-based approach to the problem. bwdistgeodesic() can help if the surface is voxelized, though. BWDISTGEODESIC starts at a given point, and then calculates the distance as you travel along the path. . /Sandra 1 Comment. selective bwdist () I have a binary 3D image that consists of a 3D object with "1"-valued pixels and background with "0"-valued pixels. BWDISTGEODESIC starts at a given point, and then calculates the distance as you travel along the path. D = bwdistgeodesic(BW,mask) computes the geodesic distance transform, given the binary image BW and the seed locations specified by mask. all the voxels presen. 9. It would be nice to write a Matlab-script that could do the image analysis and provides a histogram of the determined fiber thicknesses. bwdistgeodesic() can help if the surface is voxelized, though. Description. How timely! For a medical image processing seminar I. A true. Then remove those pixels. Learn more about bwdistgeodesic, distance transform, shortest path, seed As the title reads, I would like to use bwdistgeodesic by providing a volume and seed locations. Toggle Main Navigation. You need to account for corner connected v. D = bwdistgeodesic (BW,mask) computes the geodesic distance transform, given the binary image BW and the seed locations specified by mask. I want the measurement by following the crack pattern. But for the first step, I have to find the correct starting and ending points (which is shown in the third image with a cross sign). on 18 Mar 2022. Copy. Learn more about bwdist, sight, bwdistgeodesic, line, direct, image processing, image analysis, morphology Hi all, I am trying to work out the 'line of sight' between points in a logical matrix, i. Catégories Image Processing and Computer Vision Image Processing Toolbox Image Segmentation and Analysis Region and Image Properties. You are framing the path traversal as the movement between two points in a binary image while stepping only on the white pixels. How to find distance between boundary pixels and. bwdistgeodesic is not supported for code. Can we do that without using function, just by checking connectivity from end point to branch point. Learn more about tortuosity, distance map, geodesic path, 3d distance map, bwdistgeodesic 3d Hi, I have a 3D binary image (effectively a cube) and I want to create a distance map of the image with the starting point(s) being one of the sides/faces of the cube (i. Currently, this function returns the distance to the nearest seed location, but no the index. 9. First you need to get a binary image with the center filled in. First you need to get a binary image with the center filled in. . If you have particular applications for these techniques in your own work, I invite you to share them with us by posting a comment. This is the shortest path problem and there are several algorithms you can search for and learn about. As in the following matrix (W), zeros reperesent that those nodes are non-adjacent and other values show weights of the edges corresponding nodes. Regions where BW is false represent constrained regions that cannot be traversed in the distance. One way to find the longest spine might be to compute the skeleton and endpoints with bwmorph (). into the shape of the OT (Fig. D = bwdistgeodesic(BW,mask) は、バイナリ イメージ BW と mask で指定されるシード位置を与えられ、測地線距離変化を計算します。 BW が true である領域は、距離変換の計算中に遷移できる有効な領域を表します。 D = bwdistgeodesic (BW,mask) computes the geodesic distance transform, given the binary image BW and the seed locations specified by mask. You can use bwdist() or bwdistgeodesic() to get the distance of every pixel in each blob to the closest perimeter point. Khaled Youssef on 8 Jan 2020. You can use bwdist () or bwdistgeodesic () to get the distance of every pixel in each blob to the closest perimeter point. Sign In; Products; Solutions; Academia; Support; Community; MathWorks Matrix Menu. Use a single for loop. Then remove those pixels. Bugs are not listed here, search and report them on the bug tracker instead. I am using MatLab 7. Or you can use the Pythagorean theorem and the coordinates from bwboundaries if you want an "as the crow flies" distance, which in general is different than you'll get from either bwdist function. imcontour. Then access it at the points of interest to find the distance to the line. In any case, bwdistgeodesic should work for that. Walter Roberson on 23 Nov 2017 ×Just as the title says, I would like to know the index of the closest pixel in my image using the geodesic distance transform. Cambiar a Navegación Principal. You can use bwdist () or bwdistgeodesic () to get the distance of every pixel in each blob to the closest perimeter point. so i think i need to draw straight lines from this point to the edge of the circle,. Learn more about distance, boundary pixelsSir, this method gives exact same answer which is expected, but i need to take input of pixel co-ordinates of points inside these six circles and these points need not be center of the circle, then by using these co-ordinates only, i have to find the diameters of the circles. I want. You are framing the path traversal as the movement between two points in a binary image while stepping only on the white pixels. Currently, this function returns the distance to the nearest seed location, but no the index. D = bwdistgeodesic (BW,mask) computes the geodesic distance transform, given the binary image BW and the seed locations specified by mask. I tried using bwdistgeodesic but appears this function only supports 2D binary images and hence the starting point will be an edge of the cube rather than a face of the cube. all the voxels presen. Sign in to comment. . bwdistgeodesic is not supported for code. Can bwdistgeodesic be used on a 3D binary image?. You can then std () the distances. Link. Accedi per commentare. Length of a thin curved object in an image. Gray-weighted distance transform of grayscale image. But for the first step, I have to find the correct starting and ending points (which is shown in the third image with a cross sign). This MATLAB function computes the geodesic distance transform, given the binary image BW and the seed locations specified by mask. Then remove those pixels. all the voxels presen. bwdistgeodesic with Euclidean distance as metric. P. % Calculate distance from seed corner first_corner = A_edge_corners(1,:); D = bwdistgeodesic(A_edges, first_corner(1), first_corner(2)); figure; imagesc(D); We're starting from the right most corner and the pixels moving away from the corner increase in value. There are different formulas for measuring that property, but perhaps the easiest way of determining tortuosity of a path is using the arc-chord. Should be fast, probably faster than the first method, since there are only. bwdistgeodesic. Regions where BW is false represent constrained regions that cannot be. I want to calculate geodesic distance between non-adjacent nodes in an directed graph. . If you want to divide image into 100 equal block, then. So I want to extract the index of the nearest nonzero pixel of a binary image, constrained to a mask. You can use bwdist() or bwdistgeodesic() to get the distance of every pixel in each blob to the closest perimeter point. Regions where BW is true represent valid regions that can be traversed in the computation of the distance transform. Then an image of just the branches with the branchpoints removed. Now I want to plot the ROC curve. Then pick two branchpoints to test and make an image with just those two. Is there a specific reason for this behavior?区域和图像属性. Image Analyst il 29 Mar 2014. 13 | You are now following this blog post. . . bwdistgeodesic with Euclidean distance as metric. In sum, I want the INDX from "bwdist" but constrained to a mask: [D,INDX]=bwdist (BW,'quasi-euclidean'); After doing some research I found out that "bwdistgeodesic" allows to. How to check it from bwdistgeodesic(BW,C,R). Learn more about tortuosity, distance map, geodesic path, 3d distance map, bwdistgeodesic 3d Hi, I have a 3D binary image (effectively a cube) and I want to create a distance map of the image with the starting point(s) being one of the sides/faces of the cube (i. All the posts in this series. Teja Muppirala on 14 Mar 2013. A tag already exists with the provided branch name. Saltar al contenido. Regions where BW is true represent valid regions that can be traversed in the computation of the distance transform. Regions where BW is true represent valid regions that can be traversed in the computation of the distance transform. The smallest value of D, 12, is the minimum path length (for paths consisting only of horizontal and vertical segments) from one object to the other. e. Regions where BW is true represent valid regions that can be traversed in the computation of the distance transform. D = bwdistgeodesic (BW,mask) computes the geodesic distance transform, given the binary image BW and the seed locations specified by mask. Or you can use the Pythagorean theorem and the coordinates from bwboundaries if you want an "as the crow flies" distance, which in general is different than you'll get from either bwdist function. You can apply it to the coordinates in BW4 which can be found using [y,x]=find(~BW4). e. I suggest you run around the border of the image and if there are any white pixels closer than 10 pixels or so, connect them. txt) or read online for free. But this isn't quite what we want. The bwdistgeodesic function can help you with the 'cityblock' or ' quasi-euclidean ' method : For example, if you choose the first edge point(x1,y1) and you compute bwdistgeodesic(bw,y1,x1,'cityblock'), you will get a distance matrix whose values will be in the range [0 : number of connected components -1]. /Sandra 1 Comment. Learn more about code generation, matlab function, digital image processing, matlab coder, bwdistgeodesicAccepted Answer. Here is the image that I got after applying regionalShortest path on an image can be handled deterministically using techniques such as bwdistgeodesic. Or you can use the Pythagorean theorem and the coordinates from bwboundaries if you want an "as the crow flies" distance, which in general is different than you'll get from either bwdist function. You can use blockproc from Matlab. But sometimes it has more than 1 possible path and I don't know how to get all the routes separatelly. Alex Taylor on 3 Jun 2015. To illustrate, here's a recap of the 'quasi-euclidean' example from last time. T = T1 + T2. Calling bwdistgeodesic() or regionprops() will give you the pixels connecting them. One of the distance metrics options is 'quasi-euclidean' which measures the total Euclidean distance along a set of horizontal, vertical, and diagonal line segments that cicumvent the.