Search found 6 matches

by useratimgmgck
2016-07-22T17:46:37-07:00
Forum: Users
Topic: All kind of lossless image compression
Replies: 13
Views: 27029

Re: All kind of lossless image compression

Yes, it works. There are some observations.
1. XnView doesn't read JPEG-LS file made by this library (but files made by another JPEG-LS codec reads successfully).
2. This library compresses little bit worse (0.1%) than some other JPEG-LS codecs.
by useratimgmgck
2016-07-21T21:29:17-07:00
Forum: Users
Topic: All kind of lossless image compression
Replies: 13
Views: 27029

Re: All kind of lossless image compression

Good news, thank you! I never used github projects before. I have Visual Studio 2012 Professional. Couldn't you advise, what I have to do? I did 1. download (pushed the button "Clone or download") 2. open the folder "vs10.0" I would like to have executable with short instructions...
by useratimgmgck
2016-07-06T10:05:23-07:00
Forum: Users
Topic: All kind of lossless image compression
Replies: 13
Views: 27029

Re: All kind of lossless image compression

JPEG-LS compression is still actual problem for me (I didn't find JPEG-LS support in libjpeg). No problem if it is not recommended. Would like it to be possible at least...
by useratimgmgck
2016-07-03T12:52:37-07:00
Forum: Users
Topic: All kind of lossless image compression
Replies: 13
Views: 27029

Re: All kind of lossless image compression

Thank you, I have tried as you wrote 1. Conversion "magick testimage.bmp testimage.jp2" works lossless. OK. 2. Conversion "magick testimage.bmp testimage.png" works lossless. It works a little bit worse (compression ratio) than OptiPNG (less than 1% at test image). OK So, I have ...
by useratimgmgck
2016-07-03T12:03:18-07:00
Forum: Users
Topic: All kind of lossless image compression
Replies: 13
Views: 27029

Re: All kind of lossless image compression

I saw that text, but can't reproduce compression.
by useratimgmgck
2016-07-03T11:52:43-07:00
Forum: Users
Topic: All kind of lossless image compression
Replies: 13
Views: 27029

All kind of lossless image compression

Hello, I have read documentation, but I didn't understand how to LOSSLESSLY compress image. So, input data are: 1. I have image in BMP file format, let's it be "testimage.bmp" (8bpp or 24bpp). 2. My operation system is Windows and I need all actions be executed from the command line. 3. I ...