Length exposure wide dynamic eclosion fusion method based on gauss filtering

A Gaussian filtering and fusion method technology, applied in image data processing, instrumentation, computing and other directions, can solve the problems of complex implementation, occupying a lot of hardware resources, unfavorable product realization, etc., achieving high real-time performance, occupying less hardware resources, and simple implementation. Effect

Inactive Publication Date: 2016-03-23
CHENGDU GUOYI ELECTRONICS TECH CO LTD
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Problems solved by technology

[0002] Among various wide dynamic technologies, the wide dynamic technology based on multi-frame fusion is a relatively common one, and there are various fusion algorithms, such as pyramid fusion, block fusion and other methods. In comparison, these algorithms The implementation is complicated, takes up more hardware resources, and has poor real-time performance, which is not conducive to product realization

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  • Length exposure wide dynamic eclosion fusion method based on gauss filtering
  • Length exposure wide dynamic eclosion fusion method based on gauss filtering
  • Length exposure wide dynamic eclosion fusion method based on gauss filtering

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[0034] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0035] Such as figure 1 As shown, a long and short exposure wide dynamic feathering fusion method based on Gaussian filtering includes the following steps:

[0036] S1: Extract the highlight area, and extract the highlight area in the long exposure image through the brightness area adjustment operator;

[0037] The method for extracting the highlighted region is as follows: first normalize each pixel point F(x, y) of the long-exposure image F, and then bring it into the formula L(x, y)=1 / (1+F( x,y) -10 ) to obtain the high-brightness area image L.

[0038] S2: Establish a binarization mask, calculate the mean value of the results obtained in step S1, and use the mean value to perform binarization processing to obtain a binarization mask ...

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Abstract

The invention discloses a length exposure wide dynamic eclosion fusion method based on gauss filtering, and the method comprises the steps of 1 extracting a high light area in a long exposure image by adjusting an operator in a brightness area; 2 averaging the result obtained from step 1 and conducting binary processing by using the average value to obtain a binary mask comprising 0s and 1s; 3 conducting gauss filtering to the binary mask to get an eclosion effect and obtain an eclosion mask; extracting short exposure information and long exposure information; (4) multiplying the eclosion mask obtained from step 3 by a short exposure image; (5) taking the rest part of an eclosion mask image obtained from step 3 and multiplying it with a long exposure image; adding the result obtained from step 4; making data correction to the result obtained from step 5; and then outputting. <{EN2}>According to the invention, FPGA can be realized; the realization is simple; the occupied hardware resource is little; the fusion method fuses original pixel directly; and the real-time property is high.

Description

technical field [0001] The invention relates to a wide dynamic fusion algorithm, in particular to a long and short exposure wide dynamic feathering fusion method based on Gaussian filtering. Background technique [0002] Among various wide dynamic technologies, the wide dynamic technology based on multi-frame fusion is a relatively common one, and there are various fusion algorithms, such as pyramid fusion, block fusion and other methods. In comparison, these algorithms The implementation is complicated, takes up more hardware resources, and has poor real-time performance, which is not conducive to product realization. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a long-short-exposure wide-dynamic feathering fusion method based on Gaussian filtering that directly fuses long- and short-exposure images and is suitable for hardware implementation without changing the pixel values ​​of the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/50
CPCG06T5/50
Inventor 刘军
Owner CHENGDU GUOYI ELECTRONICS TECH CO LTD
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