Image Pickup Apparatus Motion Vector Detection Density
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Solution Overview
Problem
Existing image pickup apparatuses face difficulties in accurately detecting motion vectors of subjects during panning shots, especially for beginners, as dense vector detection blocks increase processing time and may not cover the subject's entire range, leading to inaccurate image blur correction.
Innovation Solution
An image pickup apparatus with a processor and memory that adjusts the density of image regions for motion vector detection based on the shooting mode, allowing for precise detection and correction of image blur by setting vector detection blocks more densely when in panning shot mode, enabling accurate motion vector detection at any screen position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If vector detection blocks are densely arranged over the entire screen to improve motion vector detection accuracy, then detection precision is improved, but processing time increases and the amount of movement on the image plane increases
Solution Approach 1:
The patent applies local quality by arranging vector detection blocks with different densities in different regions of the screen. Specifically, blocks are arranged more densely in regions where the subject is likely to be located (determined by focus control target positions) and less densely in other regions. This allows the system to maintain high detection accuracy in critical areas while reducing the overall number of blocks, thereby decreasing processing time and computational load.
2Productivity
If vector detection blocks are densely arranged near the center of the screen to reduce processing time, then processing efficiency is improved, but motion vector detection accuracy for subjects at screen edges deteriorates
Solution Approach 1:
The patent implements dynamics by making the vector detection block arrangement adaptive and changeable based on shooting conditions. The block density distribution is dynamically adjusted according to the focus control target position and the detected subject location. When the subject moves to different regions of the screen, the system reconfigures the block arrangement to maintain appropriate density in the relevant regions, ensuring both processing efficiency and detection accuracy regardless of subject position.
3Productivity
If the number of vector detection blocks is reduced to decrease processing time, then processing speed is improved, but the ability to detect motion vectors of subjects at any screen position deteriorates
Solution Approach 1:
The patent achieves universality by creating a vector detection block arrangement system that can adapt to different shooting scenarios and subject positions. The same basic arrangement mechanism serves multiple functions: it provides dense coverage when subjects are at screen centers, adjusts to maintain coverage when subjects move to edges, and optimizes processing speed by reducing blocks in irrelevant regions. This multi-functional approach ensures the system remains effective across all screen positions while maintaining processing efficiency.
Data Source
AI summary
An image pickup apparatus includes a detection unit which detects motion vectors between a plurality of captured images, a first setting unit which sets positions of a plurality of image regions used for motion vector detection by the detection unit, and a second setting unit which sets a target position of focus control. A result of detection by the detection unit is used for image blur correction. When the image pickup apparatus is in a first image blur correction mode, the first setting unit sets the positions of the plurality of image regions to be denser than when in a second image blur correction mode. When the image pickup apparatus is in the first image blur correction mode, the first setting unit sets the positions of the plurality of image regions according to the target position set by the second setting unit.