Display Image Comparison to Cut Processing Power and Noise
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Solution Overview
Problem
Conventional image processing apparatuses waste power and computing resources by continuously processing unchanged images and fail to effectively filter noise interference, leading to image quality deterioration.
Innovation Solution
An image processing apparatus and method that includes a sampling unit, a comparing unit, a determining unit, and an operation unit, which compares current and previous images using a threshold to determine if the images are the same, and if so, stops processing to conserve power and filter noise by using the previous image's operation result.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the operation unit and output hysteresis unit continuously process images even when unchanged, then image processing completeness is maintained, but power consumption increases and computing resources are wasted
Solution Approach 1:
The patent implements dynamic processing by continuously comparing current images with previous images and adjusting processing operations based on detected changes. The system transitions between active processing and idle states dynamically, maintaining reliability when changes occur while conserving energy when images remain unchanged.
Solution Approach 2:
The system performs self-monitoring through automatic image comparison and change detection, enabling it to autonomously determine when processing is necessary. The determining unit uses the comparison result to self-regulate processing operations without external control, balancing completeness and energy consumption.
2Measurement precision
If the operation unit continuously processes images, then processing accuracy is maintained, but noise interference is amplified and image quality deteriorates
Solution Approach 1:
The patent performs preliminary change detection through comparison before executing full processing operations. By预先 comparing images and identifying actual changes, the system avoids processing noise-induced variations, thereby maintaining accuracy while filtering noise interference.
Solution Approach 2:
The system implements feedback through continuous comparison of current and previous images, using the comparison result to regulate subsequent processing. This feedback mechanism enables the system to distinguish between meaningful changes and noise, maintaining processing accuracy while suppressing noise amplification.
Data Source
AI summary
An image processing apparatus is applied to a display and includes a sampling unit, a comparing unit, a determining unit and an operating unit. The sampling unit is configured to receive a pulse-width modulation (PWM) signal and sample the PWM signal to output a current image. The comparing unit is coupled to the sampling unit and configured to compare the current image with a previous image to generate a comparison result, wherein the previous image is prior to the current image. The determining unit is coupled to the comparing unit and configured to determine whether the current image is the same with the previous image according to the comparison result and a threshold value. If a determination result of the determining unit is YES, the operating unit stops its operation.