While I was working on a prototype yesterday, I found myself writing a small bit of code that turned out to be so useful, I wondered why I had never done it before. I'd like to show it to you.... 更多内容 >>

Today's post is by guest blogger Isaac Bruss. Isaac has been a course developer for MathWorks since 2019. His PhD is in computational physics from UMass Amherst. Isaac has helped launch and support... 更多内容 >>

For some shapes, especially ones with a small number of pixels, a commonly-used method for computing circularity often results in a value which is biased high, and which can be greater than 1. In... 更多内容 >>

I have seen some requests and questions related to identifying objects in a binary image that are touching the image border. Sometimes the question relates to the use of imclearborder, and... 更多内容 >>

Someone recently asked me about the order of objects found by the functions bwlabel, bwconncomp, and regionprops. In this binary image, for example, what accounts for the object order?The functions... 更多内容 >>

In May 2006, I wrote about a technique for computing fast local sums of an image. Today, I want to update that post with additional information about integral image and integral box filtering... 更多内容 >>

In some of my recent perusal of image processing questions on MATLAB Answers, I have come across several questions involving binary image objects and polygonal boundaries, like this.The questions... 更多内容 >>

Note added 20-Dec-2022: I wrote this post with lossy JPEG in mind. If you work with DICOM data, see Jeff Mather's note in the comments below about the use of lossless JPEG in DICOM. I have... 更多内容 >>

Last winter, Aktham asked on MATLAB Answers how to find the channels in this image.url = "https://www.mathworks.com/matlabcentral/answers/uploaded_files/880740/image.jpeg";A =... 更多内容 >>

Woo hoo! The Image Processing Toolbox team has just created a new product:Medical Imaging Toolbox™Shipped with the R2022b release a couple of months ago, this product provides apps, functions,... 更多内容 >>