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. m at master · tomasvicar. selective bwdist () I have a binary 3D image that consists of a 3D object with "1"-valued pixels and background with "0"-valued pixels. A couple years ago, I put together a demo to show how to use MATLAB to calculate the tortuosity, or “twistedness,” of blood vessels. 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 are framing the path traversal as the movement between two points in a binary image while stepping only on the white pixels. /Sandra. If you have any code regarding this please send it to me. I'm trying to find the shortest path between 2 points using the 'bwdistgeodesic' function. Learn more about code generation, matlab function, digital image processing, matlab coder, bwdistgeodesic Call bwdistgeodesic passing in the binary image and the row and the column of the destination. Copy. Select a Web Site. 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,idx] = bwdist (BW) also computes the closest-pixel map in the form of an index array, idx. %%画像を重ねる. Description. 3 Comments. 区域生长 2. I have two sets of feature vectors from two different face images. Description. Respuestas (1) Use either bwdist or bwdistgeodesic after having created a mask in which the line pixels are set to 1. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. You can then std() the distances. I am using MatLab 7. Image Analyst on 29 Mar 2014. . Calculate the gray-weighted distance transform, specifying the upper left corner and the lower right corner of the square as seed locations. At the location (x1,y1) of your first point , the distance matrix value will be 0, those of the next. As in the following matrix (W), zeros reperesent that those nodes are non-adjacent and other values show weights of the edges corresponding nodes. Copy. Description. Here's what I do: According to Steve Eddins's image processing blog post on this topic, the bwdistgeodesic function (since r2011b) computes the shortest path that avoids objects. This MATLAB function computes the geodesic distance transform, given the binary image BW and the seed locations specified by mask. Learn more about bwdist, bwdistgeodesic, euclidean distance, quasi-euclidean Image Processing Toolbox. I want to compute the euclidean distance of "some" background pixels to. Calling bwdistgeodesic() or regionprops() will give you the pixels connecting them. 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. Missing functions []In this post in the Exploring shortest paths series, I make things a little more complicated (and interesting) by adding constraints to the shortest path problem. Sign in to comment. Regions where BW is false represent constrained regions that cannot be traversed in the distance. Mary Ben on 15 Mar 2021. That is to say: dist_A-B = min (geodist (A, B1), geodist (A, B2. D = bwdistgeodesic(BW,mask) computes the geodesic distance transform, given the binary image BW and the seed locations specified by mask. I calculated the distance according to the following equation: I used the MATLAB function. You are framing the path traversal as the movement between two points in a binary image while stepping only on the white pixels. Link. Divide the geodesic distance by the hypotenuse between the two end points to calculate tortuosity. /SandraLearn more about bwdistgeodesic, bwdist Image Processing Toolbox I have a binary 3D image that consists of a 3D object with "1"-valued pixels and background with "0"-valued pixels. You are framing the path traversal as the movement between two points in a binary image while stepping only on the white pixels. Is there a specific reason for this behavior?I was hoping to do it without the bwdistgeodesic function because my version of matlab doesn't have that function. 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. T1 = graydist (A,1,1); T2 = graydist (A,3,3); Sum the two transforms to find the minimum path between the seed locations. Description. You are framing the path traversal as the movement between two points in a binary image while stepping only on the white pixels. e. 您还可以沿图像中的路径测量单个. 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. . 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. Depth code from Marine Ecological Classification. BWDISTGEODESIC starts at a given point, and then calculates the distance as you travel along the path. Length of a thin curved object in an image. In the image you attached the green line would fit perfectly but I tried on other image and end up again with discontinuities- multiple connected components/ROIs that need to be connected to span the full distance. Theme. This MATLAB function computes the geodesic distance transform, given the binary image BW and the seed locations specified by mask. bwdistgeodesic with Euclidean distance as metric. 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. Can bwdistgeodesic be used on a 3D binary image?. Thank you for your reply. . Currently, this function returns the distance to the nearest seed. skel= bwmorph(ima, 'skel',Inf);bwdistgeodesic with Euclidean distance as metric. I am using MatLab 7. How to check it from bwdistgeodesic(BW,C,R). There is no farthest end-to-end measurement available. Regions where BW is false represent constrained regions that cannot be traversed in the. If you have any code regarding this please send it to me. Currently, this function returns the distance to the nearest seed location, but no the index. . This MATLAB function computes the geodesic distance transform, given the binary image BW and the seed locations specified by mask. 区域分离和聚合. bwdistgeodesic() will give you the shortest path. Learn more about shortest path, bwdistgeodesic MATLAB I have a square grid of a specific size, say 50 x 50. I don't think bwdistgeodesic() can be used on 3D binary images. Brett's Pick this week is Arclength, by John D'Errico. 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. bwdistgeodesic On this page Syntax Description Examples Compute Geodesic Distance Transformation of Binary Image Input Arguments BW mask CR idx method Output. This will be carried out using two computer vision functions from MATLAB: bwdistgeodesic() and watershed(). D = bwdistgeodesic (BW,mask) computes the geodesic distance transform, given the binary image BW and the seed locations specified by mask. 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. 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. This set represents the shortest path. 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. I want. D = bwdistgeodesic(BW,mask) computes the geodesic distance transform, given the binary image BW and the seed locations specified by mask. Can you explain more on the connected component labeling and AND-ing the blobs with original image. Description. Alas this doesn't seem to be the case (see code below). See Steve's Image Processing blog. all the voxels presen. For example pixel 1 has coordinates are P1(10,20) and another pixel coordinates P2(50,60). Then an image of just the branches with the branchpoints removed. Catégories Image Processing and Computer Vision Image Processing Toolbox Image Segmentation and Analysis Region and Image Properties. Currently, this function returns the distance to the nearest seed location, but no the index. Can you explain more on the connected component labeling and AND-ing the blobs with original image. このpixを. Create a binary matrix in the shape of the oval. Hello, bwdist allows one to use Euclidean distance as metric while for bwdistgeodesic that is not an option. . Learn more about bwdist, bwdistgeodesic, euclidean distance, quasi-euclidean Image Processing Toolbox. 9. Learn more about bwdist, bwdistgeodesic, euclidean distance, quasi-euclidean Image Processing Toolbox. imcontour. Currently, this function returns the distance to the nearest seed location, but no the index. Copy. all the voxels presen. On the other hand, distance through 3 space is quite easy to get in this situation, using pdist2() KSSV on 29 Mar 2019. . 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. Answers (1) Use either bwdist or bwdistgeodesic after having created a mask in which the line pixels are set to 1. On the other hand, distance through 3 space is quite easy to get in this situation, using pdist2() KSSV on 29 Mar 2019. Then remove those pixels. For example pixel 1 has coordinates are P1(10,20) and another pixel coordinates P2(50,60). Hello, bwdist allows one to use Euclidean distance as metric while for bwdistgeodesic that is not an option. 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. Show None Hide None. You are framing the path traversal as the movement between two points in a binary image while stepping only on the white 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. Edited: Sean de Wolski on 28 Aug 2015. . You can apply it to the coordinates in BW4 which can be found using [y,x]=find(~BW4). What is the quasi-euclidean distance metric in 3D that is used by the function bwdistgeodesic? I only find documentation of it in 2D. Help Center; Community; MathWorksbwdistgeodesic is not supported for code. Can you use bwdistgeodesic or graydist in the Image Processing Toolbox directly on the image grid?. Should be fast, probably faster than the first method, since there are only. You can use blockproc from Matlab. I want to compute the euclidean distance of "some" background pixels to. Link. Then remove those. Learn more about bwdist, bwdistgeodesic, euclidean distance, quasi-euclidean Image Processing Toolbox. 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 . . 1. sce","contentType":"file. Vancouver, and the communities. if zeros represent floor space and ones represent walls, I would like to know all the points in the m. Divide the geodesic distance by the hypotenuse between the two end points to calculate tortuosity. Then take the max value of that. bwdistgeodesic with Euclidean distance as metric. 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). 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. Brett's Pick this week is Arclength, by John D'Errico. Currently, this function returns the distance to the nearest seed location, but no the index. . 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. José-Luis on 7 Jul 2016. /Sandra 1 Comment. . 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. D = bwdistgeodesic(BW,ind) computes the geodesic distance of each pixel in BW to the nearest seed. I was trying to code for thinning an image and to an extent I got an output. You can apply it to the coordinates in BW4 which can be found using [y,x]=find(~BW4). if there are no finite values in D, break the loop. . Alas this doesn't seem to be the case (see code below). 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. Learn more about bwdistgeodesic, distance transform, shortest path, seed . Currently, this function returns the distance to the nearest seed location, but no the index. Can bwdistgeodesic be used on a 3D binary image?. Then remove those pixels. I am using MatLab 7. 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. e. Development Edit. Copy. skel= bwmorph (ima,'skel',Inf); B = bwmorph (skel, 'branchpoints'); E = bwmorph (skel,. Learn more about code generation, matlab function, digital image processing, matlab coder, bwdistgeodesicAccepted Answer. José-Luis el 7 de Jul. B = blockproc (A, [M N],fun) A is input image, [M N] is size of block, and fun is function handle. . As expected, there is a constant-value minimum path along the diagonal. 二、基于区域的图像分割 1. selective bwdist () I have a binary 3D image that consists of a 3D object with "1"-valued pixels and background with "0"-valued pixels. CCnew. As the title reads, I would like to use bwdistgeodesic by providing a volume and seed locations. if there are no finite values in D, break the loop. Your calculation for spinelength assumes that pixels of any connectivity are equivalently far apart which is not true. pygeodesic is similar to other libraries on PyPi (such as gdist. . There are two points, a source, say (1,1), and a destination, say (26,35). all the voxels presen. Vai al contenuto. I want to compute the euclidean distance of "some" background pixels to the object. 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. Hello, bwdist allows one to use Euclidean distance as metric while for bwdistgeodesic that is not an option. Show None Hide None. skel= bwmorph (ima,'skel',Inf); B = bwmorph (skel, 'branchpoints'); E = bwmorph (skel,. Let's try it out. Thank you for your reply. You can then std () the distances. . Next call bwmorph. 9. 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. . bweuler. all the voxels presen. Is there a specific reason for this behavior?区域和图像属性. 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. First you need to get a binary image with the center filled in. . using bwdistgeodesic to find shortest paths subject to constraint I hope you found the series interesting and useful. One way to find the longest spine might be to compute the skeleton and endpoints with bwmorph (). Hello ! my goal is to find the location of my object which has the smallest width. You would ask for the distance for each point to one of the endpoints and you would ask for the distance for each point to the other endpoint and then you would add. And there is no definitive crossways width. Learn more about image processing, regionprops, bwdistgeodesic, mask Image Processing Toolboxdoc bwdistgeodesic %will give you this transform in three dimensions. Learn more about image processing, regionprops, bwdistgeodesic, mask Image Processing ToolboxThe MATLAB bwdistgeodesic function was then used to measure the “quasi-euclidean” distance of all pixels in the left and right cell masks based on their distance from the corresponding scratch edge mask. Teja Muppirala on 14 Mar 2013. 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. I want to compute the euclidean distance of "some" background pixels to the object. on 18 Mar 2022. Now for any given source point, examine the corresponding point in the transform. For each pixel in BW, the distance transform assigns a number that is the distance between that pixel and. 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. Theme. Length of a thin curved object in an image. Theme. If you want to divide image into 100 equal block, then. 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. Actually, there are several other useful functions that can be applied to this task, including imregionalmin and bwdistgeodesic, a new function that just shipped in R2011b. *Actually, I'm using bwdistgeodesic at the next step to find the minimum distance between C and R. I'm trying to find the shortest path between 2 points using the 'bwdistgeodesic' function. thank you for your time. Follows an incomplete list of stuff missing in the image package to be matlab compatible. 5]); P = imoverlay(P, paths. The function bwdistgeodesic doesnt seem to work for this version of Matlab. Regions where BW is false represent constrained regions that cannot be traversed in the distance. Walter Roberson on 23 Nov 2017 ×Image processing: Determine fiber diameter. Theme. Find the largest value in D. 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]. Regions where BW is false represent constrained regions that cannot be traversed in the. Is there a specific reason for this behavior?OUT = bwdistgeodesic(imt2, M, 'cityblock'); MMM=(isnan(OUT) & imt2); nnz(MMM) ans = 0. This MATLAB function computes the geodesic distance transform, given the binary image BW and the seed locations specified by mask. bwdistgeodesic. Then take the max value of that. . Is there a specific reason for this behavior?bwdistgeodesic with Euclidean distance as metric. Answers (1) I think you'll need to get an image of just the branch points. Does a. Matlab implementation of several methods for cell detection and cell segmentation - Cell-segmentation-methods-comparison/seeded_watershed_dt. Sign In to Your MathWorks Account; My Account; My Community Profile; Link License; Sign Out; Products; SolutionsIn my previous posts on Exploring shortest paths (November 1, November 26, and December 3), I have noted several times that there isn't a unique shortest path (in general) between one object and another in a binary image. In particular the description of how it works is in terms of 2D. 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 clarification please go through my above. I want to compute the euclidean distance of "some" background pixels to the objec. see the code for visual illustration. It's simple to use. BWDISTGEODESIC starts at a given point, and then calculates the distance as you travel along the path. Description. Copy. . All the posts in this series. BWDISTGEODESIC starts at a given point, and then calculates the distance as you travel along the path. bwdistgeodesic() will give you the shortest path. hello and good day, sir @imageanalyst. How to find distance between boundary pixels and. As the title reads, I would like to use bwdistgeodesic by providing a volume and seed locations. 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. First you need to get a binary image with the center filled in. Follows an incomplete list of stuff missing in the image package to be matlab compatible. Toggle Main Navigation. But sometimes it has more than 1 possible path and. Each sensor node has a sensing radius of 5 metres as shown in the figure (where small blue circles and magenta diamonds are the sensors and the dotted blue and magenta circles show their sensing ranges). Walter Roberson on 28 Sep 2015 ×Can bwdistgeodesic be used on a 3D binary image?. Then access it at the points of interest to find the distance to the line. 要计算这些属性（以及更多属性），您可以使用 图像区域分析器 或 regionprops 函数。. 1) How to find the city block metric?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). 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. You can first find the branch points and endpoints using BWMORPH, and then call BWDISTGEODESIC to get the distance from the branches. Then remove those pixels. Currently, this function returns the distance to the nearest seed location, but no the index. As the title reads, I would like to use bwdistgeodesic by providing a volume and seed locations. 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. Follows an incomplete list of stuff missing in the image package to be matlab compatible. As expected, there is a constant-value minimum path along the diagonal. Regions where BW is false represent constrained regions that cannot be traversed in the distance. Regions where BW is true represent valid regions that can be traversed in the computation of the distance transform. bwdistgeodesic with Euclidean distance as metric. Gray-weighted distance transform of grayscale image. I am using a simple definition of tortuosity (tort = distance between endpoints/length of curve). all the voxels presen. bwpropfilt. all the voxels presen. bwdistgeodesic with Euclidean distance as metric. bwdistgeodesic is not supported for code. using bwdistgeodesic to find shortest paths subject to constraint Get the MATLAB code . bwarea Area of objects in binary image bwareafilt Extract objects from binary image by size bwconvhull Generate convex hull image from binary image bwdist Distance transform of binary image bwdistgeodesic Geodesic distance transform of binary image bweuler Euler number of binary image bwpropfilt Extract objects from binary image using properties. So I want to extract the index of the nearest nonzero pixel of a binary image, constrained to a mask. txt) or read online for free. Sign in to comment. There are. Then put in each branch one at a time and call bwdistgeodesic () to see if they're connected by that branch. Missing functions EditBased on connectivity or whether two pixels in another image ( Image 1 ) are connected, I have to draw line between those pixels in another image (Image 2). Regions where BW is true represent valid regions that can be traversed in the computation of the distance transform. According to Steve Eddins 's image processing blog post on this topic, the bwdistgeodesic function (since r2011b) computes the shortest path that avoids objects. Accepted Answer. Copy. 5 . Start at a endpoint, start walking and find all pixels that are closer than the nearest branchpoint. Image Analyst il 29 Mar 2014. T = T1 + T2. D = bwdistgeodesic(BW,mask) computes the geodesic distance transform, given the binary image BW and the seed locations specified by mask. Assuming your image is binary and called "I", this is all it takes: Theme. e. Currently, this function returns the distance to the nearest seed. Accedi per commentare. 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. Start at a endpoint, start walking and find all pixels that are closer than the nearest branchpoint. The array should get to be closer and closer to 0 as it gets closer to the oval. You could use bounding box, or MajorAxisLength and MinorAxisLength, which is the axes of an ellipse fitted to the blob. Currently, this function returns the distance to. You may receive emails. Based on your location, we recommend that you select: . Assuming your image is binary and called "I", this is all it takes: Theme. Copy. 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. Then call imfill (binaryImage, 'holes') to get three solid branches. This MATLAB function computes the geodesic distance transform, given the binary image BW and the seed locations specified by mask. Anyway, why don't you use bwdistgeodesic like Alex and Steve show you? Sign in to comment. Currently, this function returns the distance to the nearest seed location, but no the index. standard deviation of points from line. . 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. Use a single for loop. Learn more about bwdist, bwdistgeodesic, euclidean distance, quasi-euclidean Image Processing Toolbox. Toggle Main Navigation. You now have an array of distances to the oval. I have to find the shape of the object so i have to find the length of the x and y axis length of the shape. into the shape of the OT (Fig. Regions where BW is true represent valid regions that can be traversed in the computation of the distance transform. Hey all, How do i loop the code under here so in the end i get a plot of all the data from all images in the wanted folder? clear all; clc; cur_dir = 'C:RESULTS'; %name correct file that y. 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. Unwanted branches in thinning process. D1 = bwdistgeodesic(mask, bw1, 'quasi-euclidean'); D2 = bwdistgeodesic(mask, bw2, 'quasi-euclidean'); D = D1 + D2; D = round(D * 8) / 8;. 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. i have follow the code but it only measure straight line (endpoint). Answers (1) I think you'll need to get an image of just the branch points. So I want to extract the index of the nearest nonzero pixel of a binary image, constrained to a mask. A fabricated fiber structure is made visible using a SEM. 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. You can reconstruct that spur-less. You can use bwdist() or bwdistgeodesic() to get the distance of every pixel in each blob to the closest perimeter point. D= bwdistgeodesic (D1,C,R) This will compute the geodesic distance transform. . 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. But still the final output does have some small unwanted lines emerging from different. . 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. 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. What is the quasi-euclidean distance metric in 3D that is used by the function bwdistgeodesic? I only find documentation of it in 2D. Then find out which pair of endpoints had the longest distance. bwdistgeodesic with Euclidean distance as metric. 2. 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. Answers (1) Sean de Wolski on 28 Aug 2015. If I try to force it along the skeleton it also returns paths that are not between the two points but farther away from both. Then call bwdist to get the distance transform on the binary image. i need to find the shortest path. if n<=4 complx=1, n<=12 complx=2, n<=28 complx=3]. I need help calculating fiber length. you can do something like that: clc; clear all; % read in a sample image -- also see letters. .