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

An image processing, high-speed technology, applied in image communication, television, electrical components, etc., can solve the problems of wavelet transform algorithm increasing hardware implementation complexity, complex structure, etc., to achieve the effect of fast image processing speed and strong data processing ability.

Inactive Publication Date: 2011-08-10
SHANGHAI JIAO TONG UNIV +1
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Problems solved by technology

However, the wavelet transform algorithm used in this scheme increases the complexity of hardware implementation, and requi

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

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Embodiment Construction

[0031] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0032] like figure 1 As shown, this embodiment includes: an image input device, an encoding module, a central processing unit, a code stream storage device, and a code stream output device connected through a system bus, wherein: the image input device acquires an original image sequence and sends the image sequence to the encoding module, the encoding module compresses and encodes the input image sequence and outputs the compressed code stream to the code stream storage device, the central processor configures the register information to control the working status of each device and module, and responds to the enc...

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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 ...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N7/30H04N19/42
Inventor 刘瑞赵红旭竺加毅刘佩林
Owner SHANGHAI JIAO TONG UNIV
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