Image Processing Apparatus Noise Reduction for Turning Speed
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Solution Overview
Problem
Network cameras face issues with image visibility when the image capturing device is turned, leading to video images with reduced visibility due to high turning speeds, and cyclic type noise reduction processing can cause afterimages, compromising visibility.
Innovation Solution
An image processing apparatus that adjusts the intensity of cyclic noise reduction processing based on the turning speed of the image capturing device, reducing intensity when the device is turned within a specified speed range to prevent afterimages and maintain high visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If cyclic type noise reduction processing is performed with high intensity, then noise components are effectively removed, but afterimages occur and visibility is compromised
Solution Approach 1:
The patent applies dynamics by making the noise reduction intensity adjustable and variable over time. The determination unit dynamically adjusts the intensity parameter based on turning speed detection, allowing the system to adapt between high intensity (when stationary) for effective noise removal and low intensity (when turning) to prevent afterimages, thus resolving the contradiction between noise reduction quality and afterimage prevention
Solution Approach 2:
The patent implements parameter changes by modifying the noise reduction intensity parameter according to the turning speed of the image capturing device. When turning speed exceeds a threshold, the intensity parameter is reduced to prevent afterimages while maintaining acceptable noise reduction performance, directly addressing the contradiction between effective noise removal and afterimage avoidance
2Area of stationary object
If the image capturing device turns at high speed, then coverage area increases, but image visibility deteriorates due to motion blur and noise reduction artifacts
Solution Approach 1:
The system dynamically adjusts noise reduction intensity based on real-time turning speed detection. During high-speed panning or tilting, the determination unit reduces intensity to minimize afterimages and visibility degradation, while still providing some noise reduction benefit, thus allowing high-speed operation with acceptable image quality
Solution Approach 2:
The patent employs feedback by continuously monitoring turning speed and using this information to adjust noise reduction intensity. The determination unit receives turning speed information, compares it against thresholds, and automatically modifies processing parameters to maintain visibility quality during dynamic operation, resolving the contradiction between coverage area and visibility
Data Source
AI summary
An image processing apparatus capable of acquiring images with high visibility is provided. A system control circuit of an image processing apparatus acquires the turning speed of the image capturing device capable of being turned, determines a first intensity as the intensity of noise reduction processing when the turning speed is higher than a speed in a predetermined speed range, and determines a second intensity lower than the first intensity as the intensity of the noise reduction processing when the turning speed is within the predetermined speed range. An image processing circuit of the image processing apparatus performs the noise reduction processing on an image of a target frame, which is one of a plurality of images of frames captured by the image capturing device, at the determined intensity, based on the image of the target frame and an image of a frame preceding the target frame.