Fast pan/tilt positioning method for smart home scene

Abstract

The present invention discloses a fast pan / tilt positioning method for a smart home scene. The method comprises the following steps: marking a to-be-positioned image in a smart home scene, and preprocessing the positioned image and each frame image in a real-time video stream; performing feature extraction on the image; calculating image feature similarity between the current frame image and the positioned image, when the similarity is less than the threshold, rotating the pan / tilt from the recording position horizontally and vertically to the initial position, and recording the horizontal andvertical degrees of the pan / tilt at the recording position; rotating the pan / tilt to the recording position; rotating the pan / tilt to 10 degrees above and below, and right and left to the recording position respectively, moving 1 degree each time, and recording the corresponding position coordinates and similarity; and rotating the pan / tilt to the position of the highest point of similarity, comparing the similarity of the position with the threshold, and if the similarity is not less than the threshold, indicating that the pan / tilt positioning is successful. The method provided by the present invention has the advantages that the pan / tilt stereoscopic positioning speed is fast, the positioning effect is good, and the real-time video processing delay is low.

Description

technical field [0001] The invention relates to the field of smart home, in particular to a fast pan-tilt positioning method for smart home scenes. Background technique [0002] PTZ positioning means that the PTZ camera will automatically search for the marked tracking object through horizontal and vertical rotation to achieve intelligent tracking. Real-time gimbal positioning is more complicated in smart home scenarios. It is necessary to decompose the video stream into frame-by-frame images, extract effective features to describe the current image, and locate the marked objects within the three-dimensional space. However, in today's market, smart home devices with PTZ positioning functions have the following disadvantages: they cannot achieve stereo positioning, the positioning effect is not ideal, and there is a large time delay for real-time video processing. Contents of the invention [0003] The purpose of the present invention is to provide a fast pan-tilt position...

AI Technical Summary

Problems solved by technology

Real-time gimbal positioning is more complicated in smart home scenarios. It is necessary to decompose the video stream into frame-by-frame pictures, extract effective features to express the current image, and locate the marked objects within the three-dimensional space.

However, in today's market, smart home devices with PTZ positioning functions have the following disadvantages: stereo positioning cannot be achieved, the positioning effect is not ideal, and there is a large delay in real-time video processing

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