On Sat, Feb 18, 2017 at 08:37:26PM +0100, Paul B Mahol wrote:
> On 2/18/17, Steinar H. Gunderson wrote:
> > The quantization table is stored in the natural order, but when we
> > access it, we use an index that's in zigzag order, causing us to read
> > the wrong value. This causes artifacts, espec
On 2/18/17, Steinar H. Gunderson wrote:
> The quantization table is stored in the natural order, but when we
> access it, we use an index that's in zigzag order, causing us to read
> the wrong value. This causes artifacts, especially in areas with
> horizontal or vertical edges. The artifacts look
The quantization table is stored in the natural order, but when we
access it, we use an index that's in zigzag order, causing us to read
the wrong value. This causes artifacts, especially in areas with
horizontal or vertical edges. The artifacts look a lot like the
DCT ringing artifacts you'd expec
