A digital wide dynamic method and device based on raw space

A wide dynamic and wide dynamic processing technology, applied in the field of image processing, can solve problems such as difficult integration, achieve the effect of improving the brightness of dark areas and controlling the overexposure of bright areas

Active Publication Date: 2018-01-16
ZHEJIANG UNIVIEW TECH CO LTD
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that the image collected by the image sensor in the current monitoring equipment (here refers to the IP camera) is generally located in the RAW space, and the digital wide dynamic processing can only be applied to the YCrCb space of the image, and it is not easy to integrate into the existing monitoring equipment. The invention provides a digital wide dynamic method and device based on RAW space

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A digital wide dynamic method and device based on raw space
  • A digital wide dynamic method and device based on raw space
  • A digital wide dynamic method and device based on raw space

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0056] In order to explain the present invention in detail, the present invention will be further described in conjunction with the accompanying drawings and embodiments.

[0057] In this embodiment, a digital wide dynamic processing unit for realizing digital wide dynamic processing of RAW spatial images is added between the image sensor and the image processing unit in the existing monitoring equipment (referring to IP cameras here). The digital wide dynamic processing unit of the current embodiment The wide dynamic processing unit adopts FPGA chip (Field-Programmable Gate Array, that is, Field Programmable Gate Array), and of course DSP or ARM can also be used. The image processing unit in the existing mainstream IP camera is generally an ASIC chip, and the traditional The digital wide dynamic processing between the ISP module and the encoding module of the ASIC chip is moved to the flexible FPGA chip to obtain a better wide dynamic image on the basis of not destroying the i...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A digital wide dynamic method based on RAW space, which is applied to monitoring equipment, including collecting original RAW space images, and performing digital wide dynamic processing before the original RAW space images are sent to the image processing unit of the monitoring equipment, wherein the digital wide dynamic Dynamic processing converts the image from RAW space to YCrCb space and performs image segmentation, then performs histogram statistics on the segmented sub-regions, adjusts the histogram and cumulative histogram to obtain the region center point histogram mapping curve, and uses the interpolation method Obtain the histogram mapping curve of any point, perform curve mapping on the original point of the regional image, and convert the image after mapping into RAW space. The invention also discloses a digital wide dynamic device based on the RAW space by utilizing the method. The digital wide dynamic of the present invention directly acts on the RAW space image, so that the digital wide dynamic processing can be easily integrated into mainstream IP cameras.

Description

technical field [0001] The invention belongs to the technical field of image processing, and in particular relates to a digital wide dynamic method and device based on RAW space. Background technique [0002] Dynamic range refers to the difference in light intensity between the brightest area and the darkest area in a given scene. The dynamic range that can be represented by traditional digital images that are widely used at present is very limited, which makes the bright areas in the scene lost due to overexposure. The details are lost, and the dark areas are also lost due to underexposure. For indoor scenes with a large contrast between light and dark, traditional IP cameras (Internet Protocol cameras, network cameras) are limited by CCD or CMOS photosensitive characteristics, and it is difficult to maintain details in bright and dark areas, seriously affecting image quality. [0003] In the field of security, the wide dynamic effect of cameras at night has gradually beco...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/64H04N5/217G06T5/00
Inventor 羊海龙王智玉
Owner ZHEJIANG UNIVIEW TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap