Reference image selection method, device, storage medium and depth camera

Abstract

The application provides a method, device, storage medium, and depth camera for selecting a reference image. The depth camera is preset with multiple reference images, and each reference image corresponds to a distance range and an exposure parameter range. The exposure of each reference image The parameter ranges do not overlap each other. The method includes: obtaining the distance value between the target object in the current frame of the depth camera and the depth camera, and obtaining the exposure parameters of the current frame; determining the target from multiple reference images according to the distance value and exposure parameters The reference image, wherein the distance value is within the distance range of the target reference image, and the exposure parameter is within the exposure parameter range of the target reference image. By introducing exposure parameters as the basis for selecting the target reference image, combined with depth information to select the most suitable reference image, the accuracy of depth recognition based on the target reference image can be guaranteed as much as possible, and it can effectively solve the problem that the default reference image cannot meet the requirements when the module is just started. Depth calculation problems with large distance differences.

Description

technical field [0001] The present application relates to the technical field of depth recognition, in particular, to a method, device, storage medium and depth camera for selecting a reference image. Background technique [0002] With the rise and explosion of face unlocking and face payment functions, the application of 3D structured light modules is becoming more and more widespread. The working distance of the 3D structured light module is generally 0.3m to 1.2m. In order to make the accuracy of the entire working area meet the algorithm requirements of depth recognition, multiple reference pictures are generally preset so that the nearest one can be selected when calculating the depth information. The reference plane, which gives the highest accuracy. [0003] Most of the existing structured light modules use a single reference image. When the distance between the measured object and the structured light module is close to the distance from the reference plane, the acc...

AI Technical Summary

Problems solved by technology

Such a solution, firstly, consumes a lot of calculations and consumes system resources; secondly, when the module is just started, if the measured object is far away or relatively close to the current default reference image, the calculated The accuracy error will be relatively large

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