Were you intrigued by the custom spatial transformations I showed last week? Here's a challenge for you: Create a sample image transformation that is in some way creative, interesting, or just... 続きを読む >>

Blog reader David A. asked me a while back about how to transform an image based on some mathematical function. For example, the online paper "Visualizing complex analytic functions... 続きを読む >>

The function imtransform has several optional parameters that allow you to fine-tune its behavior. Today's topic is about the parameters that let you control where the input... 続きを読む >>

I've written previously about how imtransform uses inverse mapping to compute the input-space location corresponding to each output pixel. I've also written about how imtransform uses the... 続きを読む >>

I regularly receive blog comments and direct e-mail asking for help with writing image processing GUIs in MATLAB. That's way beyond the scope of this blog, and I'm afraid I don't have time to... 続きを読む >>

I saw an interesting MATLAB based image processing application on a melanoma skin cancer blog recently. The example, including code, shows how the lesions are segmented, traced, and measured. Several... 続きを読む >>

Recently, our application support engineers gave a series of presentations to development groups. These presentations summarized calls received by tech support about different products. I thought... 続きを読む >>

The last time I wrote about spatial transformations, I explained that imtransform uses the function findbounds to locate the transformed image in output space. By default, imtransform computes... 続きを読む >>

A customer asked me last week how to do multidimensional interpolation with integer inputs. The MATLAB function interpn supports only double- and single-precision inputs. It's possible to do... 続きを読む >>

More bits and pieces from CGIV today, typed in while watching England and Sweden battle it out on the telly... it's currently 1-1. I saw a poster this morning describing how color... 続きを読む >>