Search found 8 matches
- 2016-10-27T13:21:56-07:00
- Forum: Users
- Topic: Way to set reset Markers for a JPEG image.
- Replies: 1
- Views: 5632
Re: Way to set reset Markers for a JPEG image.
I am wondering this as well. Did you find a solution?
- 2016-10-25T15:36:11-07:00
- Forum: Magick++
- Topic: sample-factor
- Replies: 2
- Views: 12424
Re: sample-factor
Thanks again snibgo, I got it working with defineValue.
- 2016-10-25T09:13:41-07:00
- Forum: Magick++
- Topic: sample-factor
- Replies: 2
- Views: 12424
sample-factor
a) Is there function in Magick++ to apply desired chroma subsampling factor (like the command line "-sampling-factor")? b) Further, I understand that by default, when writing jpeg images, 4:2:0 subsampling will be applied by default up to quality factor 90; above 90, no subsampling will oc...
- 2016-10-25T08:37:55-07:00
- Forum: Bugs
- Topic: Custom Quantization Tables using defineValue
- Replies: 1
- Views: 13302
Custom Quantization Tables using defineValue
Hello, I think I found a bug. It could be attributed to user error, but I think I've ruled out that possibility. The problem is in supplying a "quantization-table.xml" I wish to encode with the following QTs in a C++ program: Luminance Quantization Table 16, 12, 14, 17, 22, 30, 45, 72, 12,...
- 2016-10-15T11:42:18-07:00
- Forum: Magick++
- Topic: Custom Quantization Tables
- Replies: 5
- Views: 14428
Re: Custom Quantization Tables
Anyone out there know how I can fix this and encode with the desired QTs?
- 2016-10-15T10:35:17-07:00
- Forum: Magick++
- Topic: Custom Quantization Tables
- Replies: 5
- Views: 14428
Re: Custom Quantization Tables
I can't get it to work out. I am using the imagemagick supplied "quantization-table.xml" that will encode with the following QTs: Luminance Quantization Table 16, 12, 14, 17, 22, 30, 45, 72, 12, 13, 14, 17, 22, 31, 46, 74, 14, 14, 16, 19, 25, 35, 52, 83, 17, 17, 19, 23, 30, 41, 62, 100, 22...
- 2016-10-14T09:58:42-07:00
- Forum: Magick++
- Topic: Custom Quantization Tables
- Replies: 5
- Views: 14428
Re: Custom Quantization Tables
Yes, this should do it. I'll work with it.
Thanks, Jeff
Thanks, Jeff
- 2016-10-13T16:33:22-07:00
- Forum: Magick++
- Topic: Custom Quantization Tables
- Replies: 5
- Views: 14428
Custom Quantization Tables
Hello, I'm working on a C++ application and want to compress with custom quantization tables. Is there a way to do this in a C++ program? The "quality factor" function is not precise enough. And I know I can do this with the command line installation of ImageMagick but I can't find the sol...