Camera Movement Compensation Using Lookup Table Mode Selection
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Solution Overview
Problem
Existing camera movement compensation systems are limited in their ability to effectively stabilize images against camera movement, especially at low illumination levels, and cannot compensate for camera movement beyond a certain threshold, leading to blurred images.
Innovation Solution
A system and method that uses a look-up table to select a compensation mode and parameters based on detected camera movement and brightness, utilizing multiple movement compensation modules to adjust lens or shutter settings for optimal image capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional movement compensation methods are used, then image stabilization is achieved within a limited range, but camera movement beyond the compensation limitation cannot be compensated
Solution Approach 1:
The patent implements dynamic compensation mode switching based on detected camera movement magnitude. The system transitions from fixed compensation parameters to adaptive, multi-mode compensation that adjusts according to the actual movement conditions, enabling effective compensation across a broader range of camera movements.
Solution Approach 2:
The patent changes compensation parameters dynamically based on movement detection results. By storing multiple sets of compensation parameters corresponding to different movement levels and switching between them, the system extends its effective compensation range beyond the limitations of fixed-parameter traditional methods.
2Illumination intensity
If exposure time is prolonged to capture sharp images at low illumination, then image quality improves, but camera movement during extended exposure causes blurring
Solution Approach 1:
The patent employs feedback mechanisms where camera movement is continuously detected and fed back to the control system. This real-time feedback enables the system to adjust compensation parameters dynamically during exposure, allowing prolonged exposure times while maintaining image sharpness through active movement correction.
Solution Approach 2:
The system performs preliminary movement detection and compensation mode selection before the actual image capture. By pre-determining the appropriate compensation parameters based on detected movement and illumination conditions, the system prepares the compensation mechanism in advance, enabling extended exposure without blurring.
3Adaptability or versatility
If multiple compensation modes are implemented to extend compensation range, then adaptability improves, but system complexity increases
Solution Approach 1:
The patent segments the compensation system into multiple discrete modes, each optimized for specific movement ranges and illumination conditions. This segmentation allows the complex compensation task to be divided into manageable, pre-defined operational states, reducing the computational complexity of real-time decision-making while maintaining broad adaptability.
Solution Approach 2:
The system performs preliminary calibration and stores compensation parameters in advance for different movement conditions. By pre-computing and storing appropriate compensation parameters in lookup tables, the system eliminates complex real-time calculations, reducing processing complexity while maintaining multiple compensation modes for extended range.
Data Source
AI summary
A method for compensating camera movement solves the problem of the captured image becoming blurred due to involuntary camera movement in the following way. Firstly, a camera with a look-up table is provided. Next, after a trigger signal is received, the camera movement and the environmental brightness are detected to generate a movement value and a brightness index. A compensation mode and a set of parameters that correspond to the movement value and the brightness index are selected from the look-up table. Finally, when an image-capturing signal is received, the movement compensation modules of the camera are driven by referring to the compensation mode and the parameters to capture a sharp image in a best mode.