Steve on Image Processing

Concepts, algorithms & MATLAB

Results for: Dilation algorithms

A structuring element decomposition “gotcha” 12

Posted by Steve Eddins,

In my earlier posts about dilation and erosion algorithms, I wrote about exploiting structuring element decomposition for improving speed. Today I want to discuss a potential decomposition gotcha: If you don't implement decomposed dilation and erosion carefully, you can easily end up with wrong... read more >>

Dilation algorithms—decomposing more shapes 2

Posted by Steve Eddins,

In my previous post on dilation algorithms I discussed structuring element decomposition. We looked at the decomposition of structuring elements with rectangular domains. Today I want to follow up on the idea by looking at decompositions of other structuring element shapes. ... read more >>

Pad values in dilation and erosion 4

Posted by Steve Eddins,

Blog reader DKS asked recently why values outside the image are assumed to be -Inf when computing dilation. I thought this issue was worth exploring further because it has practical implications for certain computations. ... read more >>