>> I've posted a question on StackExchange, searching for a better >> regtest comparison algorithm >> >> https://computergraphics.stackexchange.com/questions/14143/search-for-special-image-difference-metric > > I've been busy with Life over the last year, but this question never > really left my mind. This weekend I had some time and inspiration > to prototype things.
Sorry for my late reply. > So, if a symbol is moved, as soon as the window encompasses the > difference, it is canceled out. Thus, small movements only > contribute to the measurements in the unsmoothed image, while big > movements also contribute in the smoothed images. This has the > effect of making small movements less important than big changes. > (See the "shift" examples attached). Thanks, this looks promising! I only wonder whether there is a means to even more optically enhance the adding/removing part so that the differences can be immediately seen. Would it be possible to render the image itself as pale gray, making the green and red colours stick out more prominently? Or maybe we could have inverted B/W images, again making the red and green parts more visible? > ps. Running test-baseline yields the following complaint. (I am using > -dbackend=cairo). Does this ring a bell for anyone? [...] Sorry, no. Could you perhaps isolate the offending file? Werner
