Imaging Control Unit Selective Region Processing
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Solution Overview
Problem
Conventional imaging apparatuses consume excessive power and data when performing full-screen imaging, even if only a part of the screen is necessary for tasks like face or object recognition, due to interleaving reading methods.
Innovation Solution
An imaging apparatus that controls analog-to-digital conversion processing based on differences between digital signals of representative pixels and reference values, allowing for selective imaging of only necessary regions by switching between interleaving and region control imaging modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If full-screen reading is performed after interleaving reading, then moving object detection accuracy is improved, but power consumption increases
Solution Approach 1:
The imaging element is divided into multiple pixel blocks, and only selected pixel blocks are subjected to full-screen reading based on interleaving reading results. This segmentation approach allows the system to maintain detection accuracy by focusing resources on relevant regions while reducing overall power consumption by excluding irrelevant regions from full reading operations.
Solution Approach 2:
Different reading strategies are applied to different regions of the imaging element. Regions identified as containing moving objects through interleaving reading receive full-screen reading for accurate detection, while regions without motion remain in low-power interleaving mode. This local quality differentiation resolves the contradiction by optimizing power consumption without sacrificing detection accuracy in critical areas.
2Measurement precision
If full-screen reading is performed after interleaving reading, then moving object detection accuracy is improved, but data amount increases
Solution Approach 1:
The system extracts only the necessary pixel blocks that contain moving objects from the full imaging element for detailed reading. By taking out only the relevant regions identified through interleaving reading, the system maintains accurate moving object detection while significantly reducing the total data amount that needs to be processed and transmitted, compared to performing full-screen reading on the entire imaging element.
3Measurement precision
If full-screen reading is performed after interleaving reading, then moving object detection accuracy is improved, but data transfer band increases
Solution Approach 1:
The data transfer process is segmented by transmitting only the data from pixel blocks that contain moving objects, rather than transmitting data from the entire imaging element. This segmentation reduces the data transfer bandwidth requirement while maintaining detection accuracy, as only relevant data portions are transmitted for further processing.
4Adaptability or versatility
If full-screen reading is performed after interleaving reading, then comprehensive imaging is achieved, but power consumption increases
Solution Approach 1:
The system dynamically adjusts the reading strategy based on detected motion. When moving objects are detected in specific regions through interleving reading, the system transitions to full-screen reading only for those regions. In regions without motion, the system remains in low-power interleving mode. This dynamic adaptation maintains comprehensive imaging capability where needed while reducing overall power consumption.
Data Source
AI summary
Only a necessary region is imaged on the basis of a result of interleaving imaging. An imaging apparatus includes an imaging element, an analog-to-digital converter, and a conversion control unit. The imaging element generates analog signals of a plurality of pixels for a plurality of pixel blocks each including a plurality of pixels. The analog-to-digital converter performs analog-to-digital conversion processing for converting an analog signal into a digital signal. The conversion control unit controls the analog-to-digital conversion processing of a plurality of pixels included in a predetermined pixel block according to a difference between a digital signal of a representative pixel in the predetermined pixel block in the plurality of pixel blocks and a predetermined reference value.