PTZ Camera Video Reproduction Using Reference Image Matching
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Solution Overview
Problem
Conventional event monitoring systems using PTZ cameras face inefficiencies in detecting moving objects due to frequent generation of new background models with each camera movement, leading to increased computation volume and the need for managers to continuously monitor large volumes of preset images for specific views.
Innovation Solution
A PTZ camera-based video reproducing method and apparatus that generates a reference image for a selected section, detects identical video images based on this reference, and reproduces them consecutively, allowing managers to efficiently search and monitor specific views by recognizing and selecting preset videos from the same imaged location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a new background model is generated for every PTZ camera movement, then the system can maintain accurate object detection for each new view, but the computation volume increases significantly and detection ability declines due to frequent model regeneration
Solution Approach 1:
The system performs preliminary actions by generating background models only when necessary (when the camera returns to a preset position after moving away), rather than generating a new model for every camera movement. This preliminary approach maintains detection accuracy for significant view changes while avoiding unnecessary computation for minor or intermediate movements, thus resolving the contradiction between detection precision and computation volume.
2Reliability
If managers continuously monitor all preset images to detect specific situations, then no events are missed, but the time and effort required to search through large volumes of preset images increases
Solution Approach 1:
The system extracts and isolates only the relevant preset images that match the current camera view, separating them from the large volume of irrelevant preset images. By using image recognition technology to identify and extract only the matching views, managers can focus on monitoring a small subset of relevant images rather than continuously scanning all preset images, thus maintaining event detection completeness while significantly reducing time loss.
3Productivity
If the system reproduces all preset videos sequentially, then managers can review all captured content, but the time required to find specific views increases with the volume of preset images
Solution Approach 1:
The system creates a digital copy or representation of the current camera view and uses this reference to automatically identify and reproduce only the matching preset videos. Instead of sequentially playing all preset videos, the system copies the essential visual information from the current view and uses it to selectively retrieve relevant historical videos, maintaining review completeness while eliminating the need to search through the entire preset video collection.
Data Source
AI summary
A pan/tilt/zoom (PTZ) camera based video reproducing method and a PTZ camera based video reproducing apparatus are disclosed. The present disclosure in some embodiments provides PTZ camera based video reproducing method and apparatus that recognize, from a plurality of preset videos captured by a PTZ camera, the preset videos from the same imaged location, select the recognized preset videos, and reproduce the video images of choice.