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... 더 읽어보기 >>

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... 더 읽어보기 >>

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... 더 읽어보기 >>

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... 더 읽어보기 >>

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... 더 읽어보기 >>

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... 더 읽어보기 >>

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 =... 더 읽어보기 >>

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,... 더 읽어보기 >>

In the R2022b release, Image Processing Toolbox includes several new geometric transformation objects, such as rigidtform2d, affinetform3d, etc., that use the premultiply matrix convention instead of... 더 읽어보기 >>

About a month ago, I posted about my Code Trace for MATLAB tool, which is posted to GitHub and the File Exchange. This tool is useful for exploring and troubleshooting executing MATLAB code. I... 더 읽어보기 >>