A high-dynamic-range image quick generation method based on local characteristics

A high-dynamic image and local characteristic technology, applied in image analysis, image data processing, instruments, etc., can solve problems such as algorithm saturation and lack of contrast, achieve fast fusion, fast algorithm running speed, and ensure the effect of algorithm running speed

Active Publication Date: 2016-11-23
PEKING UNIV
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Problems solved by technology

However, the algorithm is missing on saturation and contrast

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  • A high-dynamic-range image quick generation method based on local characteristics
  • A high-dynamic-range image quick generation method based on local characteristics
  • A high-dynamic-range image quick generation method based on local characteristics

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[0033] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. It should be understood that the specific The examples are only used to explain the present invention, not to limit the present invention. The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] figure 1 Flowchart of the method for fast generation of high dynamic images based on local characteristics. Images with different exposures can be fused together by assigning different weights. Since the amount of information of ...

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Abstract

The present invention provides a method for quickly generating high dynamic images based on local characteristics. The method includes the following steps: an image segmentation step, which divides images with different exposures in the same scene into blocks of equal size; a pixel-level weight generation step, which obtains The block-level weight of each block is smoothed by mean filtering to filter out the edges between the weight blocks; the image fusion step is to fuse images with different exposures according to the image fusion model through the generated pixel-level weights together. This method enables the fused high dynamic video image to contain information of all luminance ranges, and can ensure fast algorithm running speed.

Description

technical field [0001] The invention belongs to the technical field of video image processing, in particular to a method for quickly generating high dynamic images based on local characteristics. Background technique [0002] High dynamic image generation refers to the use of computers to fuse several images of the same scene with different exposures into one high dynamic image with image information of all different exposures to meet the needs of people in various fields of research. [0003] High dynamic video generation refers to changing the shutter speed quickly through a camera, shooting low-exposure and high-exposure video sequences in real time at the same time, and then merging the two sequences into a high-dynamic sequence through the high-dynamic video generation algorithm, so that the Also includes information for all brightness ranges. [0004] The use of digital image generating equipment (digital cameras, digital video cameras, etc.) has become more and more ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
Inventor 贾惠柱柏园超解晓东杨长水陈瑞高文
Owner PEKING UNIV
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