Image Display Sharpness Control After Dynamic Contrast Processing

The patent applies different sharpness adjustment strategies to different gray level regions. For low gray level areas (0-127), the sharpness adjustment amount is set to 0 to prevent noise amplification. For high gray level areas (128-255), the sharpness adjustment amount is calculated based on the contrast amplification amount, allowing sharpness improvement without excessive noise. This local differentiation resolves the contradiction by treating different regions with different quality requirements.

The patent dynamically adjusts the sharpness parameter based on the contrast amplification amount. The sharpness adjustment amount is calculated as a function of the contrast amplification amount, creating a dynamic relationship between these two parameters. This allows the system to adaptively balance contrast improvement and noise control by changing the sharpness parameter according to the actual contrast amplification in each region.

The patent implements a feedback mechanism where the sharpness adjustment amount is determined based on the contrast amplification amount. The system calculates the contrast amplification, then uses this information to adjust the sharpness accordingly. This feedback loop ensures that sharpness is maintained or improved even as contrast amplification increases, resolving the contradiction by using the contrast amplification information to guide sharpness adjustment.

The patent establishes a dynamic relationship between contrast amplification and sharpness adjustment. By calculating the sharpness adjustment amount based on the contrast amplification amount, the system allows both parameters to change together in a coordinated manner. This parameter coupling ensures that increased contrast amplification does not lead to sharpness degradation, as the sharpness is adjusted in response to the contrast changes.