Image Processing Apparatus Motion Vector Interpolation
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Solution Overview
Problem
The image quality of image signals following interpolation is deteriorated at the beginning or end of the image clearing operation due to inaccurate motion vector detection during frame interpolation in existing image processing systems.
Innovation Solution
An image processing apparatus and method that detects motion vectors from input image signals, determines if the signal is cleared, and interpolates intermediate signals only if not cleared, allowing unchanged signals to be output when cleared to prevent inaccurate interpolation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If frame interpolation is performed using motion vector detection during image clearing operation, then frame rate enhancement is achieved, but image quality deteriorates due to inaccurate motion vector detection
Solution Approach 1:
The system performs preliminary detection of image clearing operations before executing frame interpolation. By detecting whether an image clearing operation is in progress (through monitoring clear flag signals or analyzing image signal characteristics), the system can preemptively disable motion vector-based interpolation during these operations, preventing the generation of inaccurate interpolated frames that would otherwise degrade image quality.
Solution Approach 2:
The system dynamically adjusts the frame interpolation strategy based on the operational state. When image clearing is detected, the system switches from motion vector-based interpolation to alternative methods (such as simple frame repetition or holding the previous valid frame). This dynamic adaptation allows the system to maintain high frame rates during normal operation while ensuring image quality during clearing operations.
2Stability of the object's composition
If image clearing operation is performed to prevent display distortion during input change, then display stability is improved, but image quality of interpolated signals deteriorates
Solution Approach 1:
The system introduces an intermediary detection mechanism that monitors the state of image clearing operations. This intermediary (the detection section) acts as a mediator between the image clearing function and the frame interpolation function, allowing the system to maintain both display stability through clearing operations and interpolation signal quality by preventing inaccurate interpolation during clearing.
Solution Approach 2:
By detecting image clearing operations in advance, the system can prepare alternative interpolation strategies before the clearing operation affects the interpolation process. This preliminary detection allows the system to switch to safe interpolation methods (such as repeating the last valid frame) during clearing operations, thereby maintaining both display stability and signal quality.
Data Source
AI summary
In the present invention, there is provided an image processing apparatus including: a detecting section configured to detect a motion vector from an input image signal acting as the image signal for each of chronologically input pixels; a determining section configured to determine whether the input image signal is cleared; and an interpolating section configured such that if the input image signal is not found cleared, then the interpolating section interpolates and outputs an input image signal intermediate signal interposed at a predetermined point in time between the uncleared input image signal and a preceding input image signal that precedes the uncleared input signal, in accordance with the motion vector; and if the input image signal is found cleared, then the interpolating section allows the input image signal to be output unchanged as the input image signal intermediate signal.