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Real-time image fusion method and device

An image fusion and image technology, applied in image enhancement, image data processing, graphics and image conversion, etc., can solve the problems of poor robustness of fusion, unstable fusion effect, etc., and achieve the effect of great practical value

Active Publication Date: 2014-06-04
NANJING 55TH INSTION TECH DEV
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  • Application Information

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Problems solved by technology

Since the algorithm needs to accurately know the exposure time of the image to be fused, it will lead to unstable fusion effect in some occasions, and the robustness of fusion is poor.

Method used

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  • Real-time image fusion method and device

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Embodiment Construction

[0047] In order to better understand the implementation process of the present invention, the specific implementation of the present invention will be described in detail below with reference to the accompanying drawings and implementation examples.

[0048] figure 1 It is the overall flow chart of the present invention. It can be seen that the present invention has 4 main implementation steps, namely image preprocessing, weight map calculation, threshold determination and fusion processing. The specific implementation of each part is as follows: 1. Image data A 1 And A 2 Preprocessing

[0049] The input color mode is RGB to be fused image A 1 And A 2 , Process the three components of R, G, and B separately. If A 1 And A 2 Both are 8-bit images, so the highest gray level is 2 8 -1=255, add image A 1 And A 2 Divide them by 255 to get the normalized image I 1 And I 2 . If it is an RGB image higher than 8 bits, it can be processed in this way.

[0050] 2. Calculate the weight map w 1 A...

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Abstract

The invention relates to a real-time image infusion method and a corresponding real-time image infusion device. The method includes the following steps that first, data A1 and A2 of registered images to be fused are input; second, the A1 and the A2 are preprocessed through normalization to obtain I1 and I2; third, a weight plot w1 and a weight plot w2 are solved when the I1 and the I2 are fused; fourth, the threshold vale T1 and the threshold value T2 are calculated when the I1 and the I2 are infused in a segmented mode; fifth, the I1 segment and the I2 segment are infused according to the obtained threshold value T1 and the obtained threshold value T2 in segmented fusion; sixth, the infusion result is output. With the technology, the quality of the fused image can be fast improved, and meanwhile the real time requirement in engineering application can be met.

Description

Technical field [0001] The invention relates to the field of digital image processing, in particular to a real-time image fusion algorithm, and is applied to embedded engineering products meeting real-time requirements. Background technique [0002] Image fusion technology uses a single sensor to extract the image information of the same scene under different exposure values ​​and fuse it into an image with high dynamic range information to increase the adaptability of the image to different environments. With the continuous development of the national economy, this technology has a wide range of applications in the fields of security, machine vision, medicine, and military remote sensing. [0003] The existing image fusion technology mainly includes direct weighted average fusion algorithm, fusion algorithm based on principal component analysis (Principal Component Analysis, PCA), fusion algorithm based on image pyramid decomposition, fusion method based on camera response curve, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/50G06T3/40
Inventor 吴松野宋文
Owner NANJING 55TH INSTION TECH DEV
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