Patent ID: 9679357
Date: 2017-06-13
CPC Classifications: G06T

Claim:
1. An image processing device comprising: a first processor configured to: determine a first edge direction of an edge including a first pixel of input image data, by calculating a first correlation value between a first block having a block length including the first pixel and at least one second block having the same block length positioned along the first edge direction with respect to the first pixel, calculating a second correlation value between the first block and at least one third block positioned along a second edge direction with respect to the first pixel, and determining the first edge direction based on a comparison result of the first correlation value with the second correlation value; calculate a first filter coefficient bT corresponding to the first pixel, a second filter coefficient bL corresponding to a second pixel of the input image data, and a third filter coefficient bR corresponding to a third pixel of the input image data at least based on a first reliability value of the first edge direction; and perform filter processing on the input image data on the basis of the calculated first through third filter coefficients, and output output image data, wherein the first processor compensates for the first reliability value of the first edge direction on the basis of a first weight and a second weight, wherein the first weight is calculated based on a difference between the first edge direction of the edge including the first pixel and a third edge direction of an edge including a peripheral pixel of the first pixel, wherein the peripheral pixel is disposed within a predetermined distance with respect to the first pixel, wherein the second weight is calculated according to a distance between the first pixel and the peripheral pixel.