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A Design Method of Three-way Image Fusion Processor Based on dm642

A DM642, design method technology, applied in the direction of image data processing, processor architecture/configuration, image enhancement, etc., to achieve the effect of solving data input and output conflicts, solving insufficient data bus width, and expanding the scope of application

Active Publication Date: 2017-09-29
BEIJING INST OF ENVIRONMENTAL FEATURES
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Problems solved by technology

However, the problem that needs to be solved in this solution is how to coordinate the communication and data transmission between DSP and FPGA to ensure that the entire processing can be carried out quickly and efficiently.

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  • A Design Method of Three-way Image Fusion Processor Based on dm642

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Embodiment Construction

[0033] Since this processor needs to complete a large number of preprocessing operations, it also needs to complete the processing of complex fusion algorithms of multiple modes and communication processing. Considering the advantages and disadvantages of the above three schemes at the same time, the DSP+FPGA processing scheme was finally selected for this scheme. The structure diagram of the actually designed image fusion processor is as follows: figure 1 shown.

[0034] A design method of a three-way image fusion processor based on DM642, using DSP (Digital Signal Processor) + FPGA (Field Programmable Gate Array) processing scheme, mainly including 2 CL (camera link) receivers, 1 A / D (analog / digital) video converter, 1 FPGA module, 1 DSP module, 1 FIFO (first in first out) module, 1 communication module, 1 D / A (digital / analog) video converter, 2 external SDRAM (Synchronous Dynamic Random Access Memory), 1 power supply module, including the following steps:

[0035] 1) In...

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Abstract

The invention belongs to the technical field of photoelectric image processing, and in particular relates to a design method of a DM642-based three-way image fusion processor. By adopting the DSP+FPGA processing scheme, the fusion processing of four modes of three-way images of mid-wave infrared, long-wave infrared and visible light is designed and realized. Using the strong parallel processing capability of the FPGA chip and external input information, the parallel processing of three-way image scaling and pixel-level registration is realized, which solves the problems caused by continuous zooming of visible light cameras and dual field of view switching of medium-wave and long-wave thermal imagers. The problem of inconsistent image resolution expands the application range of the image fusion processor. Using time-division multiplexing DSP data bus technology, the problems of insufficient data bus width and data input and output conflicts caused by multi-channel data reading are solved. Through the design of FPGA control circuit and the adoption of FIFO module, the problem of no video output port after the three video ports of DM642DSP are used as input interfaces is overcome, and the ability of DM642DSP chip is further exerted.

Description

technical field [0001] The invention belongs to the technical field of photoelectric image processing, and in particular relates to a design method of a DM642-based three-way image fusion processor. Background technique [0002] Image fusion is to use a certain algorithm to synthesize and process two or more different images, and finally form a new image. Its purpose is to obtain a more accurate, comprehensive and reliable image description of the same scene / object by extracting and synthesizing information from multiple images. [0003] According to the different stages of fusion processing, image fusion can be divided into three levels: pixel-level, feature-level and decision-level fusion. Pixel-level image fusion refers to the process of directly integrating information on the pixels of each image. Feature-level image fusion is a process of comprehensively processing information such as edges, shapes, and contours after feature extraction of images. Before performing d...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T1/20G06T5/50
Inventor 宋亚军杨舒
Owner BEIJING INST OF ENVIRONMENTAL FEATURES
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