Image Processing Apparatus Block-Based Change Detection
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Solution Overview
Problem
Current image display systems face high processing loads and long processing times when detecting changes in images, as they require transmitting and comparing entire image data sets, which can be inefficient.
Innovation Solution
An image processing apparatus that determines differences between reference and comparative images by comparing parts or entireties of the images, deciding on the next comparative image based on these determinations, and updating the reference image accordingly, thereby reducing the load and time required for image change detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the entirety of image data is transmitted and compared to detect changes, then the accuracy of change detection is improved, but the processing load and time increase
Solution Approach 1:
The patent divides the image data into multiple blocks and performs change detection on individual blocks rather than the entire image. The determination unit compares corresponding blocks between the current frame and reference frame, allowing selective processing of only those blocks that contain changes, thereby reducing overall processing time while maintaining detection accuracy for changed regions
Solution Approach 2:
The patent extracts only the changed blocks from the image data for transmission and further processing. The acquisition unit identifies blocks that have changed based on comparison results, and only these specific blocks are transmitted to the external device, eliminating the need to process and transmit unchanged portions of the image
2Measurement precision
If the entirety of image data is transmitted and compared to detect changes, then the completeness of change detection is improved, but the processing load increases
Solution Approach 1:
The patent segments the image into multiple blocks and processes them independently. The determination unit performs comparison operations on individual blocks rather than the complete image, significantly reducing the computational load while ensuring that all changed blocks are detected through systematic block-by-block analysis
Solution Approach 2:
The patent performs change detection only on necessary blocks rather than the entire image. When a block is determined to be unchanged, no further processing is applied to it, allowing the system to focus computational resources only on blocks that require change detection, thereby reducing overall processing load
3Reliability
If image data is transmitted from VRAM to RAM and compared by CPU, then the change detection function is achieved, but the processing efficiency decreases
Solution Approach 1:
The patent extracts only the changed blocks from the image data for transmission and processing. The acquisition unit identifies and extracts specific blocks that contain changes, transmitting only these extracted blocks to the external device, thereby improving processing efficiency by eliminating unnecessary data transfer and processing of unchanged regions
Solution Approach 2:
The patent divides the image processing task into independent block-level operations. By segmenting the comparison operation into individual block comparisons, the system can process blocks in parallel or selectively skip unchanged blocks, significantly improving processing efficiency while maintaining reliable change detection functionality
Data Source
AI summary
An image processing apparatus determines whether a reference image and an image of interest are different or the same. A determination unit determines whether a comparative image formed by a part or entirety of the image of interest and an image corresponding to the comparative image in the reference image are different or the same. A decision unit decides whether a next comparative image should be a part or entirety of the image of interest in accordance with the result of the determination. An acquisition unit acquires the comparative image from the image of interest in accordance with result of the decision.