ExifTool Forum

General => Metadata => Topic started by: lorents on February 08, 2012, 09:34:25 AM

Title: JPEG SOF Tags
Post by: lorents on February 08, 2012, 09:34:25 AM
good afternoon!
I search for files JPEG with different values SOF if there are such images throw off please

0x0 = Baseline DCT, Huffman coding
0x1 = Extended sequential DCT, Huffman coding
0x2 = Progressive DCT, Huffman coding
0x3 = Lossless, Huffman coding
0x5 = Sequential DCT, differential Huffman coding
0x6 = Progressive DCT, differential Huffman coding
0x7 = Lossless, Differential Huffman coding
0x9 = Extended sequential DCT, arithmetic coding
0xa = Progressive DCT, arithmetic coding
0xb = Lossless, arithmetic coding
0xd = Sequential DCT, differential arithmetic coding
0xe = Progressive DCT, differential arithmetic coding
0xf = Lossless, differential arithmetic coding
Title: Re: JPEG SOF Tags
Post by: Phil Harvey on February 08, 2012, 10:14:34 AM
I only have samples of these 2:

0x0 = Baseline DCT, Huffman coding
0x2 = Progressive DCT, Huffman coding

But I expect you also have samples of these.

It may be possible to generate some of the other encodings with some image processing software (like ImageMagick for example), but I haven't seen any in the wild.

- Phil
Title: Re: JPEG SOF Tags
Post by: lorents on February 08, 2012, 10:22:06 AM
They at me too, here I sit I search for them, it is interesting to study
If isn't present, it is fine with it