Vehicle body color recognition region positioning method and device

Abstract

The present invention discloses a vehicle body color recognition region positioning method and device. The method includes the following steps that: the edge texture image of the vehicle head region of a vehicle body is acquired, and the integral image of the edge texture image is calculated; the integral image is divided into a plurality of local regions of first preset area, wherein the local regions do not intersect with each other; the unit area edge densities of the local regions are calculated, a first preset number of local regions are selected according to the unit area edge densities so as to be adopted as first regions to be recognized; local sub-regions of second preset area are selected from each first region to be recognized so as to be adopted as second regions to be recognized, wherein the local sub-regions have the smallest unit area edge density; and a second preset number of regions are selected from the second regions to be recognized according to the unit area edge densities of the local regions and the local sub-regions so as to be adopted as vehicle body color recognition regions. Since the regions with smooth textures are selected according to the unit area edge densities, and then the vehicle body color recognition regions are selected, and therefore, external interference resistance is excellent.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a method and device for locating a vehicle body color recognition area. Background technique [0002] With the improvement of the quality of life, all kinds of cars appear in every corner, especially in areas such as parking lots, highways and urban roads. [0003] In areas such as parking lots, license plate recognition equipment is generally used to manage the passage of vehicles. However, the recognition rate of the license plate is not high due to the defacement of the license plate and other reasons in the actual situation. In the short term, it is very difficult to improve the recognition rate of the license plate, so the color of the car body can be used to assist in the management of vehicle traffic, but the accuracy of the body color recognition and the robustness of the illumination of the body color recognition area are good or bad. closely related. [0004] How to s...

AI Technical Summary

Problems solved by technology

However, it is generally difficult to select a smoother area for recognition, which will lead to errors in the final recognition result. Some selected areas need not be affected by different lighting environments such as exposure and backlight

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