Dynamic Image Size Adjustment for Motion Vector Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic image stabilization techniques lack the ability to dynamically adjust image size for motion vector detection based on specific photography conditions, such as zoom position, ISO speed, contrast, and object characteristics, which can affect the accuracy and speed of image stabilization.
Innovation Solution
An imaging device with an image sensor and control unit that determines the optimal image size for reduced images based on photographing information, such as zoom position, ISO speed, contrast, and object characteristics, to enhance motion vector detection accuracy and speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a predetermined fixed image size is used for motion vector detection, then the processing speed is constant and simple to implement, but the accuracy and speed of motion vector detection cannot be optimized according to different photographing conditions
Solution Approach 1:
The patent applies dynamics by making the image size for motion vector detection adjustable rather than fixed. The control unit dynamically changes the image size based on photographing conditions such as zoom position, allowing the system to adapt to different scenarios. When zoom is enlarged, a larger image size is used to maintain detection accuracy, while in normal conditions a smaller size provides faster processing.
Solution Approach 2:
The patent changes the parameter of image size based on photographing conditions. The control unit determines appropriate image sizes according to zoom position and other conditions, then generates reduced images at these variable sizes before motion vector detection. This parameter adjustment optimizes both accuracy and speed for different shooting scenarios.
2Measurement precision
If a larger image size is used for motion vector detection, then the accuracy of motion vector detection is improved, but the processing time increases
Solution Approach 1:
The system dynamically adjusts image size based on photographing conditions rather than using a fixed size. The control unit determines that when zoom is not enlarged, a smaller image size (first image size) is sufficient and faster to process. When zoom is enlarged, a larger image size (second image size larger than the first) is used to maintain detection accuracy. This dynamic adjustment resolves the trade-off between accuracy and processing time.
3Productivity
If image size is dynamically adjusted based on photographing conditions, then the accuracy and speed of image stabilization are optimized, but the complexity of the control system increases
Solution Approach 1:
The control unit dynamically determines image sizes based on photographing conditions including zoom position. This dynamic adjustment optimizes processing speed by using smaller image sizes when high accuracy is not required (normal zoom) and larger sizes when accuracy is critical (enlarged zoom), thereby improving overall productivity while managing system complexity through condition-based logic.
Solution Approach 2:
The system changes the image size parameter according to photographing conditions. The control unit receives photographing information, determines appropriate image sizes based on conditions like zoom position, and generates reduced images at these variable sizes. This parameter adaptation improves processing efficiency without requiring complex hardware modifications.
Data Source
AI summary
An imaging device including an image sensor, includes an image obtaining control unit that obtains plural continuous images of an object taken by the image sensor; a size determining unit that determines an image size of reduced images based on photographing information of at least one of the images, and generates reduced images from the images obtained by the image obtaining control unit based on the determined image size; a motion vector detection unit that detects a motion vector of the reduced images; and an image synthesis unit that synthesizes the images obtained by the image obtaining control unit based on the motion vector detected by the motion vector detection unit to obtain a synthesized image.