Color Conversion for Multi-Camera Person Matching
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Solution Overview
Problem
The increasing number of security cameras results in excessive personnel costs for operators who manually search through vast video recordings, and existing inter-camera tracking/search functions face accuracy issues due to variations in color information between cameras.
Innovation Solution
An information processing apparatus and method that calculates and applies color conversion information to match hues across multiple cameras, using a standard hue to adjust imaging parameters and improve matching accuracy by correcting for differences in lighting and environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual video search is performed by operators, then comprehensive search coverage is achieved, but personnel costs increase significantly
Solution Approach 1:
The patent replaces the mechanical manual search process with an automated inter-camera tracking system that uses computer vision algorithms to automatically detect, track, and search for targets across multiple camera feeds, eliminating the need for operators to manually review videos while maintaining comprehensive search coverage
Solution Approach 2:
The system enables self-service by allowing the tracking system to automatically perform search operations without human intervention, with the automated algorithms independently analyzing video data, identifying targets, and generating search results across the camera network
2Productivity
If inter-camera tracking is implemented, then search efficiency is improved, but matching accuracy decreases due to color variation between cameras
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting color conversion parameters and imaging parameters for each camera based on their specific characteristics, transforming the color space parameters to ensure consistent color representation across different cameras while maintaining their individual imaging efficiencies
Solution Approach 2:
The system introduces an intermediary color conversion process that acts as a mediator between cameras with different color characteristics, converting color information from various cameras into a unified color space that preserves the original imaging efficiency while enabling accurate color-based matching
3Measurement precision
If color conversion is applied to match hues, then matching accuracy is improved, but image processing complexity increases
Solution Approach 1:
The patent implements preliminary action by pre-calculating and storing color conversion parameters and imaging parameters for each camera during a calibration phase, so that during actual operation, the system only needs to apply these pre-computed parameters rather than performing complex real-time calculations, thus improving accuracy while minimizing processing complexity
Solution Approach 2:
The system applies local quality by creating camera-specific color conversion profiles tailored to each individual camera's characteristics, rather than using a uniform conversion method for all cameras, which optimizes the balance between conversion accuracy and processing requirements for each specific device
Data Source
AI summary
An information processing apparatus according to the present disclosure includes: a reception unit configured to receive image-capturing information from each of a plurality of imaging apparatuses; and a color conversion information calculation unit configured to calculate, on a basis of the received image-capturing information, color conversion information for matching hues of the plurality of imaging apparatuses. With this arrangement, it is possible to prevent, in the case where a specific target entity is recognized from images captured by a plurality of cameras, variation in image information acquired between the cameras. With such arrangement, it is possible to prevent, in the case where a specific target entity is recognized from images captured by a plurality of cameras, variation in image information acquired between the cameras.