Unlock instant, AI-driven research and patent intelligence for your innovation.

A method and device for switching a region of interest

A region of interest and region technology, applied in the field of region-of-interest switching methods and devices, can solve the problems of insufficient exposure of the region of interest, reducing the scope of application, and being susceptible to the influence of illumination, so as to be conducive to identification and abnormal judgment, and to achieve clear details. , the effect that the image brightness is satisfied

Active Publication Date: 2019-11-01
SHENZHEN STREAMING VIDEO TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a method for switching regions of interest, which aims to solve the problem that the existing vehicle-mounted front-facing imaging equipment is easily affected by the illuminance. Local overexposure or underexposure occurs in the area of ​​interest, which reduces the scope of application and is not conducive to the promotion and application of vehicle-mounted front-end imaging equipment.

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 method and device for switching a region of interest
  • A method and device for switching a region of interest
  • A method and device for switching a region of interest

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] figure 1 It is a flow chart of the implementation of the ROI switching method provided by the embodiment of the present invention, which is described in detail as follows:

[0029] In step S101, acquire the image of the previous frame of exposure;

[0030] Step S101, specifically:

[0031] During the driving process, the image of the previous frame of the current exposure image is obtained. In step S102, output the brightness value of each partition of the image, the accumulated number of pixels lower than the first set threshold, and the accumulated number of pixels higher than the second set threshold to generate evaluation data;

[0032] In step S103, according to the evaluation data and the preset illuminance evaluation area distribution table, the characteristic values ​​of a plurality of illuminance evaluation areas are generated;

[0033] Wherein, step S103 is specifically:

[0034] The preset evaluation area distribution divides the entire image into multipl...

Embodiment 2

[0051] The embodiment of the present invention describes the composition of multiple illumination evaluation areas, and the details are as follows:

[0052] The plurality of illuminance evaluation areas include an area directly ahead, an area in the center of the image, and areas on both sides of the vehicle.

[0053] refer to figure 2 , figure 2 It is a sample diagram of multiple illumination evaluation areas provided by the embodiment of the present invention.

[0054] The two upper THR0, the middle THR1 and the lower two THR2 are representative five small windows.

[0055] Wherein, THR0 represents the area directly in front, that is, the area directly in front of the vehicle.

[0056] Among them, THR1 represents the central region of the image.

[0057] Among them, THR2 represents the area on both sides of the vehicle.

Embodiment 3

[0059] image 3 It is an implementation flowchart of step S104 of the region of interest switching method provided by the embodiment of the present invention, and is described in detail as follows:

[0060] S301, judging whether the luminance ratios of the plurality of illuminance evaluation areas are all within a set range;

[0061] S302. When the luminance ratios of the plurality of illuminance evaluation areas are all within a set range, determine that the illuminance of the environment where the vehicle is located is a normal illuminance;

[0062] S303, when the luminance ratios of the plurality of illuminance evaluation areas are not within the set range, and the luminance average value corresponding to the area directly in front is higher than the luminance average value corresponding to the areas on both sides of the vehicle, determine that the illuminance of the environment where the vehicle is located is low Illumination;

[0063] Wherein, the brightness ratio is th...

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

The present invention is applicable to the vehicle-mounted monitoring field, and provides a method and device for switching regions of interest. The method includes: acquiring an image of a frame before exposure; number, the accumulated number of pixels higher than the second set threshold, and generate evaluation data; according to the evaluation data and the preset illumination evaluation area distribution table, generate the feature values ​​of multiple illumination evaluation areas; according to the feature values ​​of multiple illumination evaluation areas , Differential features under normal illuminance and low illuminance, judge the illuminance of the environment where the vehicle is located; switch the interest area of ​​the current exposure image according to the judgment result of the illuminance, generate a weight table according to the content of the image and the switched interest area, and pass The weight table controls the region of interest exposure. The invention makes the monitoring required area and the image part concerned by the intelligent algorithm stand out in details, which is beneficial to identification and abnormal judgment, and at the same time makes the interested area not exposed and the details clear.

Description

technical field [0001] The invention belongs to the field of vehicle monitoring, and in particular relates to a method and device for switching an area of ​​interest. Background technique [0002] With the popularization of vehicle-mounted front-mounted imaging equipment, many vehicles are equipped with vehicle-mounted front-mounted imaging equipment. The vehicle-mounted front-mounted imaging equipment is mainly installed in the front of the vehicle facing outwards. It has the function of a driving recorder and can be used to monitor the driving process. The driving conditions of the vehicle in front of and on the left and right sides of the vehicle are recorded, and all images in the forward direction during the driving process are recorded. Its purpose is mainly to effectively collect evidence in the event of a traffic accident, and at the same time, it can also record the beautiful scenery and driving trajectory along the way of your self-driving tour, and also provide re...

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): H04N7/18H04N5/243G06V10/22G06V10/25G06V10/50H04N23/76
CPCH04N7/18H04N23/76H04N25/535G06V20/56G06V10/22G06V10/25G06V10/50H04N23/73H04N23/71H04N25/443H04N25/583G06T7/11H04N25/533
Inventor 邓宝华刘文涛
Owner SHENZHEN STREAMING VIDEO TECH