Downstream Processor Region of Interest Feedback Loop
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Solution Overview
Problem
Existing image capture devices struggle to accurately and consistently identify and maintain a region of interest, such as a face, due to limited processing capabilities of the image signal processor, leading to inconsistent lighting and visibility issues in video streams.
Innovation Solution
Utilize a downstream processor with enhanced capabilities to identify the region of interest and provide feedback to the image capture device to adjust parameters for subsequent frames, rather than relying solely on the image signal processor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the image signal processor is used to identify the region of interest, then the system structure is simple, but the identification accuracy and consistency deteriorate due to limited processing capabilities
Solution Approach 1:
The patent introduces a downstream processor as an intermediary component between the image signal processor and the image capture device. The downstream processor receives frames from the image signal processor, performs advanced region of interest identification using its superior processing capabilities, and provides feedback to the image capture device. This intermediary architecture resolves the contradiction by maintaining system simplicity at the capture device level while enhancing identification accuracy through the downstream processor's computational power.
2Speed
If the image signal processor is used to identify and maintain the region of interest, then the processing speed is adequate, but the stability and consistency of region of interest identification deteriorate
Solution Approach 1:
The downstream processor serves as a stable intermediary that consistently identifies regions of interest across multiple frames. By receiving frames from the image signal processor and performing robust region identification, the downstream processor provides stable feedback to the image capture device, ensuring consistent region of interest maintenance throughout the video stream while preserving real-time processing capabilities.
Solution Approach 2:
The patent implements a feedback mechanism where the downstream processor continuously analyzes frames and provides region of interest information back to the image capture device. This closed-loop feedback system ensures that the image capture device can dynamically adjust its parameters to maintain consistent region of interest identification across varying video conditions, thereby improving stability without sacrificing processing speed.
3Ease of operation
If the image capture device parameters are not adjusted based on region of interest, then the device operation is simple, but the visibility and lighting consistency of the region of interest deteriorate
Solution Approach 1:
The downstream processor provides feedback information about the identified region of interest to the image capture device, enabling automatic parameter adjustment. This feedback-driven approach allows the image capture device to adapt its lighting and exposure parameters based on the region of interest characteristics, improving visibility and lighting consistency without requiring manual intervention or complex user operations.
Solution Approach 2:
The system implements self-service functionality where the image capture device automatically adjusts its own parameters based on region of interest information from the downstream processor. The device monitors its own performance and makes real-time parameter adjustments to optimize region of interest visibility, eliminating the need for external control or complex user configuration while maintaining operational simplicity.
Data Source
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AI summary
One embodiment provides a method, the method including: receiving, from a first processor in communication with an image capture device of an image adjustment system and at a second processor, a frame including a scene; identifying, using the second processor, a region of interest within the frame; providing, from the second processor to the first processor, feedback identifying the region of interest; and adjusting, using the first processor and in view of characteristics of the region of interest, a parameter of the image capture device for subsequent frames captured by the image capture device. Other aspects are claimed and described.