Abstract: An image processing apparatus and an image processing method, the image processing apparatus including: an image input unit which receives an image; and an image processing unit which generates reference data on the basis of a plurality of learning images classified into a plurality of first classes according to a noise characteristic and a plurality of second classes according to an image characteristic, and which performs scaling for the received image on the basis of the generated reference data.

Abstract: An image processing apparatus includes an image receiving unit, and an image processing unit which allows luminance of an image to be within a preset range of luminance and adjusts sharpness of the image. Accordingly, the problem that the luminance exceeds a digital value may be prevented, and the sharpness of the image may be effectively improved.

Abstract: An image display apparatus and a color distortion compensation method are provided. The image display apparatus includes a detecting part which detects whether there is a color distortion in a block, using decoding information acquired from an incoming image and a pixel value of the incoming image, and a compensation part which compensates for the color distortion of the block when it is determined that the color distortion exists. Accordingly, it is possible to detect a color distortion in the block using the decoding information and pixel value acquired from the incoming image, and compensate for the color distortion of the block by performing pixel value adjustment and low pass filtering (LPF) when it is determined that the color distortion exists.

Abstract: Provided is an apparatus and method for detecting an image enhanced from a low resolution image to a high resolution image. An apparatus detects an image converted from a first resolution to a higher second resolution. A frequency converter converts a received second resolution image signal to a frequency domain. An image determiner calculates energy per frequency from the received second resolution image signal. If an amount of energy in over a pre-set frequency is less than a threshold, the received second resolution image signal corresponds to a second resolution image converted from a first resolution image, and if the amount of energy in over the pre-set frequency is greater than the threshold, determining that the received second resolution image signal corresponds to a real second resolution image.

Abstract: An image quantization method and apparatus are provided in which a block with a high possibility of having color distortion is more elaborately quantized using a predetermined color distortion removing quantization matrix. The image quantization method includes determining a possibility of color distortion in the block using discrete cosine transform (DCT) coefficients and pixel values of the block of predetermined size of an image and performing initial quantization on the block using a predetermined color distortion quantization matrix to remove color distortion if the block has a high possibility of color distortion.

Abstract: An image processing apparatus and an image processing method, the image processing apparatus including: an image input unit which receives an image; and an image processing unit which generates reference data on the basis of a plurality of learning images classified into a plurality of first classes according to a noise characteristic and a plurality of second classes according to an image characteristic, and which performs scaling for the received image on the basis of the generated reference data.

Abstract: A display apparatus and an image processing method are provided. The display apparatus processes an input image to improve a transient, and adjusts a gain of a luminance of a pixel of which a slope variation of a luminance exceeds a threshold value, the pixel being among pixels of the image having the improved transient.

Abstract: An image processing apparatus for improving clarity and an image processing method are provided. An image processing apparatus includes an image receiving unit, and an image processing unit which allows luminance of an image to be within a preset range of luminance and adjusts clarity of the image. Accordingly, the problem that the luminance exceeds a digital value may be prevented, and clarity of the image may be effectively improved.

Abstract: An image processing apparatus, a display apparatus and a control method of the display apparatus are provided. The display apparatus includes: a communication unit which receives a first image from an image processing apparatus; an image processing unit which processes the first image which is received through the communication unit and a second image; a display unit which displays the first image and the second image which are processed by the image processing unit; and a control unit which controls the image processing unit so that the second image which is displayed in the display unit can be adjusted depending on a control of the image processing apparatus. Thus, the present invention provides a method and an apparatus using a strong image system of a television in a personal computer screen like an application.

Abstract: A method of and apparatus for edge enhancement considering singular points are provided. The method of edge enhancement includes: determining a first gain from the input image; detecting a singular point distinguishable from an edge from among pixels of the input image; based on the detection result of singular points, determining a second gain for edge enhancement processing; and multiplying the first gain by the second gain to generate a resulting edge-enhanced image.

Abstract: An image display apparatus and a color distortion compensation method are provided. The image display apparatus includes a detecting part which detects whether there is a color distortion in a block, using decoding information acquired from an incoming image and a pixel value of the incoming image, and a compensation part which compensates for the color distortion of the block when it is determined that the color distortion exists. Accordingly, it is possible to detect a color distortion in the block using the decoding information and pixel value acquired from the incoming image, and compensate for the color distortion of the block by performing pixel value adjustment and low pass filtering (LPF) when it is determined that the color distortion exists.

Abstract: Provided is an apparatus and method for detecting an image enhanced from a low resolution image to a high resolution image. An apparatus for detecting an image converted from a first resolution to a second resolution higher than the first resolution, the apparatus including: a frequency converter converting a received second resolution image signal to a frequency domain; and an image determiner calculating energy per frequency from the received second resolution image signal converted to the frequency domain, and if an amount of energy in over a pre-set frequency is less than a threshold, determining that the received second resolution image signal corresponds to a second resolution image converted from a first resolution image, and if the amount of energy in over the pre-set frequency is greater than the threshold, determining that the received second resolution image signal corresponds to a real second resolution image.

Abstract: An apparatus for and method of processing a digital image are provided. The apparatus for processing a digital image includes: a detection unit which detects the direction or a magnitude of an edge of an input image signal; and an edge enhancement unit which determines the degree of enhancing the edge based on the detected direction or the detected magnitude of the edge, and enhances the edge of the input image signal according to the determined degree of enhancement.

Abstract: An image quantization method and apparatus are provided in which a block with a high possibility of having color distortion is more elaborately quantized using a predetermined color distortion removing quantization matrix. The image quantization method includes determining a possibility of color distortion in the block using discrete cosine transform (DCT) coefficients and pixel values of the block of predetermined size of an image and performing initial quantization on the block using a predetermined color distortion quantization matrix to remove color distortion if the block has a high possibility of color distortion.