Image Pickup Device Mask Area Determination for Face Detection
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Solution Overview
Problem
Existing face detection processing technologies face challenges in reducing calculation complexity and increasing processing speed while maintaining high accuracy, as they often require processing the entire image area, which is inefficient and time-consuming.
Innovation Solution
An image pickup device and method that determine a mask area within the image data where face detection processing can be omitted, allowing for faster processing by focusing on a detection target area excluding the mask area, thereby reducing the computational load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If face detection processing is performed on the entire image area, then detection accuracy is maintained, but processing speed decreases and calculation complexity increases
Solution Approach 1:
The patent divides the image area into multiple regions and performs face detection processing selectively on each region based on predetermined criteria. This segmentation allows the system to process only relevant areas rather than the entire image, thereby improving processing speed while maintaining detection accuracy through targeted analysis of high-probability regions.
Solution Approach 2:
The patent applies different processing strategies to different regions of the image based on their characteristics. By identifying regions with high face detection probability and applying full processing only to those areas while using simplified or skipped processing for low-probability regions, the system optimizes the balance between accuracy and processing speed through localized quality adjustments.
2Reliability
If face detection processing is performed on the entire image area, then comprehensive detection is achieved, but calculation amount increases
Solution Approach 1:
The patent segments the image into multiple regions and applies face detection processing selectively based on predetermined conditions for each region. This approach reduces the total calculation amount by avoiding processing in regions where faces are unlikely to be present, while maintaining detection completeness through systematic coverage of all regions with appropriate processing levels.
Solution Approach 2:
The patent implements partial processing by performing full face detection only on regions meeting specific criteria while applying simplified or no processing to other regions. This partial action strategy reduces calculation complexity significantly while maintaining sufficient detection reliability for the intended application scope.
Data Source
AI summary
An image pickup device of the present invention includes an image pickup unit that captures a video image, a mask area determination unit that determines a mask area, for which processing for detection of a characteristic part of a target is excluded, among a portion or the entirety of an area of image data of the video image captured by the image pickup unit, and a characteristic part detector that performs the detection processing of the characteristic part of the target on a detection target area obtained by excluding the mask area determined by the mask area determination unit from the portion or the entirety of the area of the image data of the video image captured by the image pickup unit.