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Fast pan-tilt positioning method for smart home scenarios

A smart home and positioning method technology, applied in image analysis, image enhancement, instruments, etc., can solve problems such as large real-time video processing, time delay, and unsatisfactory positioning effect, so as to improve experience comfort and improve positioning effect , the effect of low hardware requirements

Active Publication Date: 2021-09-24
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Fast pan-tilt positioning method for smart home scenarios
  • Fast pan-tilt positioning method for smart home scenarios
  • Fast pan-tilt positioning method for smart home scenarios

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] Such as figure 1 As shown, the described fast pan-tilt positioning method for smart home scene includes the following steps:

[0027] Step 1: First mark the image that needs to be positioned in the smart home scene, and preprocess the marked positioning image, where the preprocessing includes grayscale processing and Gaussian blur smoothing;

[0028] Step 2: Preprocessing each frame of image in the real-time video stream, wherein the preprocessing includes grayscale processing and Gaussian blur smoothing;

[0029] Step 3: performing image feature extraction on the preprocessed marked positioning image in step 1 and the preprocessed current frame image in step 2;

[0030] Among them, such as figure 2 As shown, the specific method for image feature extraction includes the following steps:

[0031] Step (1): Divide the image into 2*2 s...

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Abstract

The invention discloses a fast pan-tilt positioning method oriented to a smart home scene, comprising the following steps: firstly mark an image to be positioned in the smart home scene, preprocess the positioning image and each frame of image in a real-time video stream; Extraction; calculate the image feature similarity between the current frame image and the positioning image, when the similarity is less than the threshold, rotate the pan / tilt from the recording position horizontally and vertically to the initial position, and record the horizontal and vertical degrees of the pan / tilt at the recording position; Rotate the gimbal to the recording position; rotate the gimbal to the top, bottom, left, and right of the recording position by 10 degrees, move 1 degree each time, and record the corresponding position coordinates and similarity; rotate the gimbal to the position of the highest similarity point, and Compare the similarity of the position with the threshold, if the similarity is not less than the threshold, the PTZ positioning is successful. The present invention has the advantages of fast pan-tilt stereo positioning speed, good positioning effect and low time delay for real-time video processing.

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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06K9/46G06K9/62G06T7/73G06T7/44
CPCG06T7/44G06T7/73G06T2207/30232G06T2207/30244G06T2207/10016G06V20/10G06V10/507G06F18/22
Inventor 张晖张迪
Owner NANJING UNIV OF POSTS & TELECOMM
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