Electronic Camera Scene Classification Using Rangefinding Data
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Solution Overview
Problem
Existing electronic cameras are unable to classify photographic scenes prior to the photographing operation, limiting their ability to adjust camera settings optimally for the scene being captured.
Innovation Solution
An electronic camera system that includes an image sensor, rangefinding means, arithmetic operation means for calculating characteristic quantities from pixel density and rangefinding information, and control means for selecting camera settings based on judged photographic scenes, allowing for pre-shot scene analysis and optimal setting adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If scene classification is performed after the photographing operation, then the camera structure remains simple, but the ability to optimize camera settings before shooting is lost
Solution Approach 1:
The patent performs scene classification and characteristic quantity calculation before the actual photographing operation. The arithmetic operation means calculates characteristic quantities from live image data and rangefinding information in advance, allowing the judgment means to determine the photographic scene and control means to select optimal camera settings before the shutter is activated. This preliminary action enables optimal setting adjustment prior to shooting.
Solution Approach 2:
The patent introduces an intermediary processing system consisting of the arithmetic operation means and judgment means that mediates between the image sensor/rangefinding means and the control means. This intermediary calculates characteristic quantities, classifies scenes, and provides recommendations to the control means, enabling sophisticated pre-shot analysis without directly complicating the core imaging hardware.
2Measurement precision
If multiple characteristic quantity groups are analyzed in detail, then the scene classification accuracy is improved, but the calculation time and processing complexity increase
Solution Approach 1:
The patent segments the characteristic quantities into distinct groups (e.g., pixel density characteristics, rangefinding characteristics, and combined characteristics) and processes them through separate arithmetic operation means. This segmentation allows systematic analysis of different scene attributes independently, improving classification accuracy while maintaining manageable processing complexity through structured organization of calculations.
Solution Approach 2:
The patent transforms raw image data and rangefinding information into normalized characteristic quantities through mathematical operations. By converting multiple raw parameters into a standardized set of characteristic quantities that can be directly compared against stored reference values, the system achieves accurate scene classification while reducing the computational complexity of comparing multiple dimensions of data.
Data Source
AI summary
An electronic camera, includes an image sensor, a rangefinding means, an arithmetic operation means for calculating a characteristic quantities based upon at least either pixel density in an image obtained via the image sensor or rangefinding information obtained via the rangefinding means, a judgment means for judging a photographic scene based upon characteristic quantities calculated by the arithmetic operation means, and a control means for selecting camera settings in correspondence to the photographic scene having been judged.