The sci.image.processing newsgroup had a discussion this week on separable filters, which reminded me that separability has been on my blog topic ideas list for a while now. ... 続きを読む >>

The morphological operator dilation acts like a local maximum operator. Erosion acts like a local minimum operator. You can use them together to compute something called the... 続きを読む >>

I was amused by this portion of a product description for a digital camera. I'm not sure that this is what I would expect from a red-eye reduction algorithm, but you have to admit it's a pretty... 続きを読む >>

Developer Mike G. read my recent post about three-dimensional image rotation and suggested that users might want to use the MATLAB function makehgtform to construct the affine transform matrix. It... 続きを読む >>

The thirteenth International Conference on Image Processing (ICIP) is next month in Atlanta, Georgia. I'll be attending to give a special presentation on software development tools and techniques... 続きを読む >>

If you look closely at the bottom of my last post, you'll see "Published with MATLAB 7.3" in small gray text. Yep, the R2006b release, including MATLAB 7.3, started shipping on September 1. Here... 続きを読む >>

Someone here recently puzzled over the output of the Hough transform functions in the Image Processing Toolbox. The Hough transform is used to detect line segments, typically in binary... 続きを読む >>

Thanks to Kimo Johnson and Perttu Ranta-aho for responding to my custom spatial transformation challenge. Contents Kimo's submission ... 続きを読む >>

Blog reader Stephen N., who's been following my posts about spatial transformations, asked me last week how to rotate a three-dimensional image. ... 続きを読む >>

Software compatibility is a tricky subject. No one likes it when an incompatible change occurs in a software application they rely on. So why do we sometimes find it necessary to make an... 続きを読む >>