Samsung Electro-Mechanics Co., Ltd.

Dong-A University Research Foundation for Industry-Academy Cooperation

Gi Dong Lee

Won Tae Choi

Joo Young Ha

Byung Hyun Kim

Bong Soon Kang

Won Woo Jang

Joo Hyun Kim

Kyung Rin Kim

Kang Joo Kim

Hak Yong Han

Sun Mi Sin

Jung Joo Yang

There are provided an apparatus and a method for estimating edge areas of pixels in a digital image to thereby prevent an edge sharpening algorithm from being applied to non-edge area of the digital image. Therefore, the apparatus can accurately determine whether each pixel is in an edge area or in a non-edge area, by generating a binary mask obtained by using a luminance difference average between each pixel and each of neighboring pixels in the digital image. Moreover, the determination of an edge-area or a non-edge area may be applied to various digital images, by adjusting a level of edge-area determination.

Apparatus and method for estimating edge areas of digital image

There is provided an apparatus for improving the sharpness of an image, which may prevent occurrence of distortion of an image in an edge enhancement process of the image by applying an active weight in accordance with a two-dimensional (2D) high pass filtering value of the image. The apparatus may include: a 2D high pass filter outputting a high frequency element value for the luminance values of pixels of an input image; a weight generating unit generating a weight changed depending on a magnitude of the high frequency element value; a weight applying unit applying the weight to the high frequency element value; and an edge enhancement image generating unit adding, to the luminance values of the pixels of the input image, the high frequency element value to which the weight is applied to thereby output an image of which an edge is enhanced.

Apparatus for improving sharpness of image

Growing community of inventors

Busan, South Korea

Gi Dong Lee