High speed JPEG (joint photographic expert group) image processing system based on FPGA (field programmable gate array) and processing method thereof

Abstract

The invention discloses a high speed JPEG image processing system based on an FPGA and a processing method thereof. The high speed JPEG image processing system based on the FPGA comprises an image input device, a coding module, a central processing unit, a code stream storage device, and a code stream output device, which are connected by a system bus; the image input device obtains an original image sequence and transmits the original image sequence to the coding module; the coding module implements compression coding on the inputted image sequence and outputs a compression code stream to the code stream storage device; the central processing unit is provided with register information to control the working states of each device and each module, and simultaneously responds to a coding completion interruption signal outputted by the coding module and transfers the compression code stream in the code stream storage device into the code stream output device through DMA (direct memory access) mode. The invention can realize parallel processing on the inputted image sequence, adopts a basic system in the JPEG standard, has simple structure and is easy to realize.

Description

technical field [0001] The present invention relates to a device and system in the technical field of digital image processing, in particular to an FPGA-based high-speed JPEG image processing system and a processing method thereof. Background technique [0002] The full name of JPEG is Joint Photographic Experts Group, which is a committee engaged in the formulation of still image compression standards under the International Organization for Standardization (ISO). The JPEG standard has been widely used for its remarkable compression efficiency and low image quality loss, and has become an international general standard. It can be used to compress grayscale images and color images, and is the basis for the development of digital video and image compression coding technology. [0003] The JPEG standard has a wide range of applications and the system is easy to implement. It is not only widely used in still image compression, such as the Internet, digital photography, remote ...

AI Technical Summary

Problems solved by technology

However, the wavelet transform algorithm used in this scheme increases the complexity of hardware implementation, and requires the cooperation of the preprocessing module and the main processing module, and the structure is relatively complicated.

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