Digital image processing method

A processing method and technology of digital images, applied in image data processing, image communication, image enhancement, etc., can solve the problem of inability to output high-quality and accurate video events, and achieve high-precision effects

Inactive Publication Date: 2014-04-23
NANYANG INST OF TECH
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Problems solved by technology

[0006] The second purpose of the digital image processing method of the present invention is: the existing highway video system cannot directly output high-quality and accurate video events

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Embodiment Construction

[0022] Combine below Figure 1 to Figure 4 , the present invention is further described:

[0023] Such as figure 1 As shown, a digital image processing method includes the following steps: performing video enhancement, video analysis and video understanding on the highway video images collected by the camera in sequence, wherein the video enhancement is to combine multiple images of the same scene with different exposure parameters Low-resolution images are reconstructed into high-quality images with high brightness dynamic range and high resolution, providing high-quality video images for the video analysis layer, thereby improving the reliability of video processing results; the video analysis is through the detection of moving objects , motion estimation and target tracking video analysis algorithms to extract the temporal and spatial object features of the bottom layer and middle layer of the video, and provide inference basis for event recognition in high-level video pro...

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Abstract

The invention relates to a digital image processing method which comprises the following steps: successively carrying out video enhancement, video analysis and video understanding on highway video images acquired by a camera. As for the video enhancement, multiple low-resolution images of the same scene and with different exposure parameters are reconstructed into high-quality images with highlight brightness dynamic range and high resolution, thus providing high-quality video images for the video analysis level and raising reliability of video processing results. As for the video analysis, detection is carried out through moving objects, and space-time object characteristics of video ground and middle levels are extracted by motion estimation and target tracking video analytic algorithms so as to provide inferential basis for event identification in high-level video processing. As for the video understanding, identification of surveillance video events is completed by analyzing and understanding the space-time object characteristics provided by the video analysis level. According to the invention, types of detection events are broader and precision is higher. Through correct identification of events, automatic control of highways is ensured.

Description

technical field [0001] The invention relates to a digital image processing method, in particular to a sample-based HDR and HR image reconstruction method for expressway video. Background technique [0002] There are many factors that affect image quality, such as spatial resolution, brightness contrast, noise, etc. High-quality images should have high spatial resolution while effectively representing high-contrast scenes. Aiming at the problem of high dynamic range image display and spatial resolution reconstruction of images, many scholars have carried out some fruitful research work, but they are basically carried out independently. Existing super-resolution restoration techniques usually assume that the exposure parameters of multiple images are constant, and the parameters of the camera response function and the noise parameters are known. However, the images acquired in the real world are usually difficult to satisfy the above assumptions. Therefore, reconstructing h...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/243H04N5/232G06T5/50
Inventor 杨新锋杨艳燕刘文杰
Owner NANYANG INST OF TECH
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