Method for self-adaptive regulating camera aperture

A self-adaptive adjustment, camera technology, applied in the direction of image communication, TV, color TV components, etc., can solve the problem of not being able to automatically adjust the aperture size of the camera, and achieve the effect of enhancing the definition

Inactive Publication Date: 2008-07-30
BEIHANG UNIV
View PDF0 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem of the present invention is: to overcome the deficiency of the prior art that the size of the aperture of the camera cannot be automatically adjusted when collecting images, and to provide a device and method for adaptively adjusting the a

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
  • Method for self-adaptive regulating camera aperture
  • Method for self-adaptive regulating camera aperture
  • Method for self-adaptive regulating camera aperture

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Hereinafter, the specific state of the present invention will be described with reference to the drawings, but the present invention is not limited to the illustrated examples.

[0021] As shown in Figure 1, the image taken by a camera with a variable aperture lens is sent to a host computer; the host processes the image, analyzes the exposure level of the image, and sends an aperture adjustment signal to the lens controller according to the analysis result; the lens The controller converts the iris adjustment signal sent by the host into a control signal that the lens can understand, and drives the iris adjustment motor to realize the adjustment of the iris.

[0022] As shown in Figure 2, the steps of the camera aperture adaptive adjustment method of the present invention are: the camera shoots with a fixed direction and a fixed focal length. Before the subject enters the shooting scene, a background image A is first collected, and the subject enters the shooting scene. Af...

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

An aperture self-adapting adjusting apparatus and method for pick-up cameras; the apparatus comprises an aperture variable lens and a relevant controller, a pick-up camera and a mainframe to control the pick-up camera; through a digital image process, the method can perform self-adaptive adjustment for the aperture of the pick-up camera according to the light beam brightness for any subject in camera, and therefore, gain the suitable exposure amount for the subject in camera and strengthen the definition of the subject in camera in the image. The apparatus and method are particularly applicable to camera shooting places where obvious differences exist in light beams between subjects in camera and background, and moreover, suitable exposure is desired for the subjects in camera; no matter where the subjects in camera are inside a scene, the method can perform correct exposure adjustment with the subject in camera as the center.

Description

Technical field [0001] The invention relates to an adaptive adjustment device and method for the aperture of a camera. Background technique [0002] Obtaining a clear image is the basis of subsequent image processing and image analysis. In many applications, the quality of the image captured by the camera, especially the image quality of the subject, is often very demanding. The appropriate aperture size is one of the key factors for obtaining clear images in camera shooting. The camera's iris is divided into two control modes, "automatic" and "manual". The use of automatic iris can maintain a proper amount of light and obtain the specified output signal strength. However, in actual operation, it is difficult to use a fully automatic iris. [0003] The traditional automatic exposure system compares the brightness average value of the entire image with a preset reference value to perform exposure control. When the brightness difference between the subject and the background in the...

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
IPC IPC(8): H04N5/238H04N5/235
Inventor 吴威张淑军黄海周忠赵沁平
Owner BEIHANG UNIV
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