Image Processing Scene Recognition Stability

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Solution Overview

Problem

In video surveillance, frequent continuous scene transitions can lead to inaccurate recognition of scene categories, and target regions such as facial or license plate areas may be overexposed or underexposed due to poor lighting conditions, resulting in ineffective presentation.

Innovation Solution

A system and method that process images by obtaining current and historical images, determining confidence levels for scene categories, updating confidence thresholds based on target scene categories, and adjusting image processing techniques accordingly to ensure accurate scene recognition and optimal brightness of target regions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If scene category recognition is performed on each image independently, then the recognition speed is fast, but the accuracy decreases due to frequent continuous scene transitions

Engineering Contradiction:
Improverecognition speedVSAvoidscene category recognition accuracy
Core Design Contradiction:
SpeedVSMeasurement precision

Solution Approach 1:

The system performs preliminary scene category recognition on historical images before processing the current image. By pre-establishing the scene categories of previous frames, the system creates a temporal context that helps stabilize recognition accuracy during frequent scene transitions, while maintaining fast recognition speed through efficient use of pre-computed historical data

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system uses the recognized scene categories of historical images as feedback to adjust and improve the recognition of the current image. By comparing current recognition results with historical patterns and using this feedback loop, the system maintains high accuracy even during rapid scene changes without sacrificing recognition speed

Inventive Principle:
Principle #23Feedback

2Manufacturing precision

If image processing is performed to improve target region brightness, then the presentation quality improves, but the processing complexity increases

Engineering Contradiction:
Improvetarget region presentation qualityVSAvoidimage processing complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The system applies different processing strategies to different regions of the image. Specifically, it identifies target regions (such as facial regions or license plate regions) and applies brightness adjustment only to these specific areas rather than processing the entire image uniformly. This localized approach improves target region presentation quality while minimizing overall processing complexity

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The system adjusts brightness parameters selectively based on the identified scene category and target region characteristics. By changing only the necessary brightness parameters for specific regions rather than globally adjusting all image parameters, the system achieves improved presentation quality with reduced processing complexity

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS20250174021A1Systems and methods for image processing
Publication Date: 2025.05.29 ZHEJIANG DAHUA TECH CO LTD
  • US20250174021A1 patent drawing
  • US20250174021A1 patent drawing
  • US20250174021A1 patent drawing

AI summary

The present disclosure relates to a system for image processing. The system obtains an image, multiple historical images captured before the image, and multiple scene categories. For each scene category, the system generates a confidence level of the image belonging to the scene category. The system obtains an initial scene category of each historical image. The system determines a target scene category to which the multiple historical images belong based on initial scene categories of the multiple historical images. The system determines multiple updated confidence level thresholds by updating, based on the target scene category, at least a portion of multiple confidence level thresholds corresponding to the multiple scene categories. The system determines, based on the multiple updated confidence level thresholds and confidence levels of the image corresponding to the multiple scene categories, a final scene category of the image, and processes the image based on the final scene category.