Hello, Pull Request: https://github.com/apache/commons-imaging/pull/38
I have requested to merge the pull request before. This email is not about that. I am happy that someone responded to my prior email regarding how to get my PR merged. Anyways, I have added a commit again to my fork (should I call it branch?). Here, I am going to discuss about my new contribution on Dec. 1, 2018 (IST). The PNG component used the ScanExpediter object to unfilter, and un-interlace PNG image data and convert it into BufferedImage data. The filtering logic was embedded in it, which is incorrect. Hence, I created an object - AdaptiveFilter - which encapsulates the filtering logic. All you do is feed it each scan-line serially, and it will filter/unfilter the image data. In addition, the PngWriter object now uses AdaptiveFilter to add filtering functionality while writing PNG image data (before it only used the NONE filter type, which was very inefficient). Now, the output of PngMultipleRoundTest has 40-50% less size than the input PNG files in data/images/png/3. I hope this will be appreciated. Regards, Shukant Pal --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
