I'm a little confused by this explanation. I have tested this with capturing images from a webpage, and used the same page in the same browser, testing on subsequent days. I am also using the minimum image size that I can, capturing only the relevant section (such as a menu bar item, and capturing as little "white space", or background). Initially the images are a perfect match, and when looked at in the Matching Preview show a red match (instead of the pink or purple that appears with less exact matches) that continues to exist when I increase the similarity to .99 (and when I run the script, the item is found successfully), but when I check several days later they will show a match of less similarity, such as .45 - .75.
This seems to leave only pixel level rendering errors as a possible cause that you list, but I have a hard time believing that they could cause such a dramatic difference in similarity. Also, I would expect that pixel level rendering errors would vary with time, not only downward but also upward; so that they might cause a script to fail one day, but then the next it would work again. However, I have not seen these images improve in similarity back to previous values once they stop working. Is there any logging information that would help with this? -- You received this bug notification because you are a member of Sikuli Drivers, which is subscribed to Sikuli. https://bugs.launchpad.net/bugs/1211462 Title: Image similarity value changes randomly Status in Sikuli: Opinion Bug description: When images are first captured, they have a similarity value of 1.0, and match exactly. However, when a script is run later, the similarity value for images degrades, typically to a value of ~.6, despite the exact same screen being visible. It occurs seemingly at random; typically it takes several days before an image will no longer be recognized, but it can occur faster as well. Because of the random nature of the error, it is difficult to reproduce intentionally, but seems to occur very frequently when scripts are tested at a later date or on a different client machine. Sikuli: 1.0.0 OS: Windows 7 32-bit To manage notifications about this bug go to: https://bugs.launchpad.net/sikuli/+bug/1211462/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~sikuli-driver Post to : sikuli-driver@lists.launchpad.net Unsubscribe : https://launchpad.net/~sikuli-driver More help : https://help.launchpad.net/ListHelp
