Title:
SURVEILLANCE IMAGE CAPTURE METHOD, APPARATUS, AND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/214838
Kind Code:
A1
Abstract:
The present application relates to a surveillance image capture method, apparatus, and system, belonging to the technical field of video surveillance. The method comprises: acquiring a luminance value of each of n continuously acquired initial images, wherein n > 1, and each initial image is acquired on the basis of an initial exposure parameter and corresponds to an exposure time; according to the luminance value of each initial image, adjusting the initial exposure parameter of the corresponding initial image to obtain n target exposure parameters; continuously acquiring z target images on the basis of the n target exposure parameters, wherein z ≥ n; and obtaining at least two video streams according to the z target images, wherein each video stream has a different exposure time, and the at least two video streams comprise a preview stream for previewing and a surveillance stream for images captured during surveillance. The present application solves the problem in the prior art that the sharpness of a preview image obtained in a road surveillance image capture scenario is low, implementing both a preview function and a surveillance image capture function for preview and capture of surveillance images.
Inventors:
MA WEIMIN (CN)
ZHANG GUOPING (CN)
YOU CAN (CN)
ZHANG GUOPING (CN)
YOU CAN (CN)
Application Number:
PCT/CN2018/087617
Publication Date:
November 29, 2018
Filing Date:
May 21, 2018
Export Citation:
Assignee:
HANGZHOU HIKVISION DIGITAL TEC (CN)
International Classes:
G08G1/01
Foreign References:
CN104243834A | 2014-12-24 | |||
US20120169883A1 | 2012-07-05 | |||
CN104702909A | 2015-06-10 | |||
CN1972385A | 2007-05-30 |
Attorney, Agent or Firm:
BEIJING SAN GAO YONG XIN INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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