JPEG (8-R8)
by SYNTECH

Software Overview

JPEG (Joint Photographic Experts Group) is a family of still, continuous-tone digital image data 
compression. The algorithm can be applied to any source image resolution, various sampling formats, 
and multidimensional color spaces.
SYNTECH's implementation on TI `C3x, `C4x is the JPEG baseline system composed of a sequential 
two-dimensional DCT, quantization of coefficients, zig-zag ordering, run length, and Huffman 
coding.
Different implementations are available:
•	color encoder/decoder with or without interleave with sampling ratio 4:2:2.
•	256 grayscale encoder/decoder for real-time applications [up to four images (256 ¥ 256) per 
second with a 60-MHz `C3x].

Features and Benefits

•	Fully compliant with JPEG-8-R8 baseline specification
•	Code `C' callable and VIRTUOSO compatible
•	Variable compression ratios
•	Support 8-, 16-, 24-bit images both grayscale and full color

Processor and System Specifications

•	Memory requirement: 
		Encoder: 4 kword
		Decoder: 6 kword
•	Ready to run on DIVA's and EXPORT DSP platforms from SYNTECH

Usage Limitations or Performance Considerations

•	Up to four images/second (256 ¥ 256, 256 grayscales) with a 60-MHz TMS320C3x with zero-wait-state 
SRAM

Algorithm Verification

•	Compliant with the JPEG 8-R8 baseline specification

Availability

•	JPEG (8-R8) optimized by SYNTECH for its DSP platforms

Company Background and Contact Information

SYNTECH, based at Sophia Antipolis, has developed high-quality DSP hardware and software products 
for applications in the following areas: multimedia, medical imagery, ultrasound, pursuit radar, 
filtering, geological radar, optical character recognition, meteorological image processing, 
security, robotics, instrumentation, process control, scientific calculations, signal recognition, 
and synthesis. The founders of SYNTECH are Mr. Simon Elkrief (President), a specialist in 
industrial data processing and automatization and Mr. Serge Serafini (General Director), a 
specialist in radar technology also the President of ANATECH, France, which conceives high 
technology DSP military acquisition and scientific products.

Contact:	SYNTECH
		Mr. R. Gauguey
		AREP Center
		Traverse des Brucs
		Sophia Antipolis
		06560 Valbonne
		France
		+ (33) 93 65 28 66
		Fax: + (33) 93 65 22 93
		e-mail: syntech@slnet.mc