On Sun, Apr 24, 2011 at 12:38 AM, rukhsana afroz <rukhsana.af...@gmail.com>wrote:
> > > On Sat, Apr 23, 2011 at 5:24 PM, Ronald S. Bultje <rsbul...@gmail.com>wrote: > >> Hi Rukhsana, >> >> On Sat, Apr 23, 2011 at 2:59 PM, rukhsana afroz >> Which bit planes are decoded correctly? And especially, how many out >> of how many? Are 99 out of 100 decoded correctly? Or 1 out of 10? >> Don't forget, the end-of-plane marker is 4 bits set to 1. For every 4 >> bits, the chance is pow(0.5, 4) that each bit is set, from a random >> perspective. Therefore, if 1 out of 10 is decoded correctly, your code >> is likely incorrect. However, if 99 out of 100 are correct, your code >> may well be correct but you're hitting some corner case that doesn't >> make it work. either way, you need to compare further to make sure >> that we're on the right track. >> >> How does it compare to the reference decoder? Are there blocks that >> are being decoded correctly now for files that previously decoded >> incorrectly? I've told you before, I need to see some data where >> you're attempting to decode an actual jpeg2k file using your decoder >> versus the reference decoder, then show me what values are being read >> in your decoder versus the reference decoder, so we can assess whether >> your decoder is doing the right thing. >> >> Hi Ronald, > > I have attched two files for code block decode results (one is for jasper > and one is for libav). I have only shown the entire code block at the > beginning and at the end of clnpass function. With the comparison of jasper, > it looks like, at the way earlier stage, where code block is defined and > with how many passes (sigpass, refpass, clnpass) should a code block be gone > is garbled. Because the parameters gone to the code block decode function is > completely different than those of jasper. I will explain more the result > files when you come to chat. I am investigating the problems, but the > current decoder can decode correctly 9 files in the conformance site, thats > why I thought, the problem might not be in earlier stage. After getting > your feedback, I will move forward on this. > > > Hi Ronald, I sent two attachments with two files, however it got bounced because the attachments were too big. I am not sure, at this stage, how to send the data to you. Please let me know. Thanks -- Rukhsana Ruby Phd Student Department of Electrical & Computer Engineering The University of British Columbia ============================
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