Abnormal color correction method applicable to thermal imaging video colorization

A thermal imaging video, correction method technology, applied in image enhancement, image analysis, image data processing and other directions, can solve the problems of inaccurate estimation, inaccurate matching, local color deviation, inaccurate tracking, etc. The effect of occupying less computing resources and low complexity

Inactive Publication Date: 2015-10-21
EAST CHINA UNIV OF SCI & TECH
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Problems solved by technology

However, any method may inevitably produce local coloring deviation due to inaccurate estimation, inaccurate tracking or inaccurate matching during inter-frame processing, that is, abnormal color
Moreover, this abnormal color will gradually accumulate and expand with the recursive process until it significantly affects the effect of the entire picture, making the rendering of the video sequence unable to continue to be effective.

Method used

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  • Abnormal color correction method applicable to thermal imaging video colorization
  • Abnormal color correction method applicable to thermal imaging video colorization
  • Abnormal color correction method applicable to thermal imaging video colorization

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Embodiment

[0032] figure 1 Shown is a flow chart of an abnormal color correction method suitable for thermal image video colorization according to the present invention. The present invention adopts the framework of frame-by-frame processing, which is applied to the processing of the next frame after the existing colorization method completes the processing of the current frame. After the abnormal color correction of the current frame is completed, the system reads the next frame as the current frame, and repeats this process until the entire colorization process of the video sequence is completed. The following in conjunction with the embodiment figure 1 The process involved in abnormal color correction is described in detail.

[0033] (1) Find out the changed pixels on the current frame relative to the previous frame. The brightness value of the pixel at the corresponding position on the previous frame is subtracted from the brightness value of the pixel on the current frame, and th...

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Abstract

The invention relates to an abnormal color correction method applicable to thermal imaging video colorization, comprising the following steps: (1) finding out changing pixels on a current frame relative to a previous frame; (2) respectively carrying out local region growing on the current frame by taking each changing pixel as an initial point; (3) working out the main color of each region, and judging colors of which the difference is greater than a threshold relative to the main color in the region as abnormal colors; and (4) using the main color of each region to correct the abnormal colors in the region. Compared with the prior art, the abnormal color correction method is low in complexity, can be used to detect and correct abnormal colors in real time in the process of colorization, and can significantly improve the accuracy of colorization results.

Description

technical field [0001] The invention relates to a method for correcting abnormal colors of color images, in particular to a method for correcting abnormal colors suitable for colorizing thermal image videos. Background technique [0002] Any object whose temperature is higher than absolute zero has thermal radiation, and the intensity of its radiation is related to the temperature of the object. The thermal imager detects the thermal radiation of the object, and forms a video image of the temperature distribution of the measured scene, that is, a thermal image. Thermal imaging is widely used in the field of night vision observation because of its high detection of thermal targets and high adaptability not affected by environmental conditions such as light and haze, and plays an important role in both military and civilian applications. [0003] From the perspective of imaging effect, thermal imaging technology for night vision has gone through three stages of development: g...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06T7/00
Inventor 谷小婧顾幸生
Owner EAST CHINA UNIV OF SCI & TECH
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