Patent ID: 9495733
Filing Date: 2016-11-15
CPC Classification: G06T,H04N

Claim Text:
1. An image processing device, comprising: input circuitry that receives an external image signal; contour direction estimating circuitry that estimates a contour direction in which signal values are constant values for each pixel of the external image signal; low pass filter circuitry that smooths a signal value of the pixels of the external image signal based on a signal value of each reference pixel that is a pixel of a reference region corresponding to the pixel and arranged in the contour direction of the pixel estimated by the contour direction estimating circuitry for each pixel; high frequency expanding circuitry that generates a high frequency component of the signal value of the pixel and expands a frequency band for the signal value of the pixel; and output circuitry that transmits a processed image signal corresponding to the signal value of the pixel.