Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Guetzli: Perceptually Guided JPEG Encoder   Guetzli is a new JPEG encoder that aims to produce visually indistinguishable
images at a lower bit-rate than other common JPEG encoders. It optimizes both
the JPEG global quantization tables and the DCT coefficient values in each JPEG
block using a closed-loop optimizer. Guetzli uses Butteraugli, our perceptual
distance metric, as the source of feedback in its optimization process. We
reach a 29-45% reduction in data size for a given perceptual distance,
according to Butteraugli, in comparison to other compressors we tried.
Guetzli's computation is currently extremely slow, which limits its
applicability to compressing static content and serving as a proof- of-concept
that we can achieve significant reductions in size by combining advanced
psychovisual models with lossy compression techniques.

22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph