Search found 3 matches

by djboshh
Thu Feb 02, 2012 11:10 am
Forum: Classic - General Support
Topic: JPEG Lossless question. Why is the file size smaller?
Replies: 11
Views: 3914

Re: JPEG Lossless question. Why is the file size smaller?

Hi all I think I may have found the answer to this mystery: My images are 4000 x 3000 and so are perfect multiples of 8 pixels. so that shouldn't of been a problem for the lossless operations. What I think may be going on is something called the Huffman codes. Huffman coding is an encoding algorithm...
by djboshh
Thu Feb 02, 2012 3:09 am
Forum: Classic - General Support
Topic: JPEG Lossless question. Why is the file size smaller?
Replies: 11
Views: 3914

Re: JPEG Lossless question. Why is the file size smaller?

One possible explanation: a lossless operation writes directly to file. Saving it afterwards (according to quality settings) would be an unnecessary step. The lossless operation writes directly to file yes, and when i examine the file size afterwards it's 1MB smaller. I happened to notice too that ...
by djboshh
Thu Feb 02, 2012 2:43 am
Forum: Classic - General Support
Topic: JPEG Lossless question. Why is the file size smaller?
Replies: 11
Views: 3914

JPEG Lossless question. Why is the file size smaller?

I noticed that when i took an original 7MB JPEG and applied a simple lossless operation like flip 180 degrees, the resulting file size after the lossless save is actually about 1MB lower than the original. Can i ask why it would be so much lower if the operation is lossless? I tried it on other JPEG...