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Method for viewing natural color at night with sense of space adopting pattern database

A technology of color night vision and implementation method, applied in the direction of character and pattern recognition, color signal processing circuit, instrument, etc., to achieve the effect of improving efficiency, enhancing scene perception, and increasing information capacity

Inactive Publication Date: 2008-11-12
DONGHUA UNIV
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Problems solved by technology

Since Yufeng Zheng's method still performs color remapping on false color images, it cannot fundamentally avoid the generation of such unnatural colors

Method used

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  • Method for viewing natural color at night with sense of space adopting pattern database
  • Method for viewing natural color at night with sense of space adopting pattern database
  • Method for viewing natural color at night with sense of space adopting pattern database

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Embodiment Construction

[0043] The following steps can be used figure 1 The flow chart shown is summarized, that is, the infrared image and the low-light image are first fused into a false color image and a grayscale image, and then the characteristics of each object in the false color image and grayscale image are used as feature vectors to create a night image. The characteristic colors of different scenes in the visual image are found in the pattern database, and the characteristic colors are assigned to the scenes.

[0044] Step 1. Construct a pattern database of infrared images and low-light images. The process can be used figure 2 To summarize with the flow chart shown, that is, for the nth group of infrared images (IR (n) ), low-light images (LL (n) ) to prescribe the brightness first, then fuse the false color image and the grayscale image, and convert the false color image from the RGB space to the LUV space. Simultaneous determination of regions R belonging to mode j in false-color image...

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Abstract

The invention provides a natural color night vision realizing method with a space sense and adopts a pattern database. The method is characterized by including the following steps: 1) building a pattern database based on an infrared image and a crepuscular image; 2) realizing the natural color night vision image with a space sense. The method has the advantages of improving the target identifying efficiency, leading the night vision image to have the space sense and being capable of fast obtaining the natural color night vision image with the space sense.

Description

technical field [0001] The invention relates to a method for realizing color night vision images. Background technique [0002] "Infrared thermal imaging" and "twilight" are two essential technical approaches to realize night vision observation. They sense the radiation / reflection of different bands of the target, and the output monochrome images have information complementarity. Fusion of these complementary Information can effectively expand the amount of information observed by the target. Currently, there are two methods of fusion for night vision images: grayscale fusion and false color fusion. Among them, false color fusion realizes color night vision by using the principle of "color difference caused by signal difference from different sensors". Since the human eye's resolution of color is much greater than that of grayscale, color night vision images will help human eyes to recognize them, and are currently a hot topic in the field of night vision research. However...

Claims

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Application Information

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IPC IPC(8): G06K9/62H04N9/64
Inventor 谷小婧孙韶媛方建安
Owner DONGHUA UNIV
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