摘要:
A method of encoding image data, and an apparatus to perform the method, the method including repeating a process of dividing a block into sub-blocks based on an average value of pixels of the sub-blocks; creating map information of the sub-blocks; determining a mode for generating bit streams according to a number of the sub-blocks; and generating bit streams of the determined mode, map information, and representative pixel values of the block or the sub-blocks.
摘要:
Sensor image encoding and/or decoding systems, media, and methods. The sensor image encoding system may include a first color component interpolation unit transforming a sensor image into a first format image by interpolating a first color component of at least two color components in the sensor image including the at least two color components, in which one pixel has one color component, and an encoding unit generating a bitstream by encoding the first format image. The sensor image decoding system may include a decoding unit receiving a bitstream obtained by encoding a sensor image including the at least two color components, where one pixel has one color component, and restoring a first format image by using at least two color components obtained by decoding the bitstream, and a first color component interpolation unit interpolating at least one color component in the first format image provided from the decoding unit.
摘要:
A method of encoding image data, and an apparatus to perform the method, the method including repeating a process of dividing a block into sub-blocks based on an average value of pixels of the sub-blocks; creating map information of the sub-blocks; determining a mode for generating bit streams according to a number of the sub-blocks; and generating bit streams of the determined mode, map information, and representative pixel values of the block or the sub-blocks.
摘要:
A system, medium, and method encoding and/or decoding image data. The image data encoding may include a transformer transforming pixel values of an image in the time domain to pixel values in the frequency domain, a quantization coefficient determiner determining a quantization coefficient corresponding to the number of bits per pixel of the image by adjusting a quantization variable defined by a user, a quantization unit quantizing the pixel values transformed by the transformer based on the quantization coefficient determined by the quantization coefficient determiner, and an entropy encoder generating a bitstream of the quantized pixel values.
摘要:
An apparatus and a method generate a coded block pattern (CBP) of an alpha channel image. An apparatus and a method encode or decode the alpha channel image using the method. The alpha channel image encoding apparatus includes a CBP generator generating a CBP of a first block corresponding to an encoding unit in the alpha channel image by allocating CBPs to a plurality of second blocks that includes the first block; and a bitstream generator generating a bitstream by encoding the CBP or the CBP and pixel values of the second blocks based on the CBP of each of second blocks.
摘要:
An entropy encoding apparatus and method. The entropy encoding apparatus includes a estimated CBP value calculating unit which estimates a CBP value of a target block and outputs an estimated CBP value of the target block, and a calculated-CBP value calculating unit which calculates a calculated-CBP value of the target block using an actual CBP value of the target block and the estimated CBP value of the target block. Also provided are an entropy decoding apparatus and method. The entropy decoding apparatus includes an estimated CBP value calculating unit which estimates a CBP value of a target block and outputs the estimated result as a estimated CBP value of the target block, and an actual CBP value calculating unit which calculates an actual CPB value of the target block using the estimated CBP value of the target block and an input calculated-CBP value of the target block.
摘要:
An apparatus and method for coding and decoding an image are provided. The apparatus for coding the image includes a spatio-temporal information prediction/compensation unit, a recovered image processor, a residue generator, a quantizer, and an entropy encoder. The spatio-temporal information prediction/compensation unit generates a predicted image by predicting and compensating spatio-temporal information including at least one of temporal prediction information from a current image and a recovered previous image, and spatial prediction information from a recovered current image. The recovered image processor performs a spatio-temporal noise removal process on the recovered current image using the spatio-temporal information, and stores the resulting noise-removed image. The residue generator generates a residue image obtained by subtracting the predicted image from the input image, and the quantizer outputs quantized coefficients by quantizing the residue image. The entropy encoder generates a bit stream by entropy coding the quantized coefficients.
摘要:
A display driving apparatus and method using a display device, such as a liquid crystal display device, and a medium for implementing a method of display driving method are provided. The display driving apparatus includes: an encoding unit which compresses and encodes image data to be displayed by the display device; a memory which stores the encoded image data; a memory control unit which stores the encoded image data in the memory and reads the encoded image data from the memory; and a decoding unit which decodes the encoded image data read out from the memory to restore the image data. Input image data is compressed and encoded in units of blocks, and the encoded image data is stored in a memory. Thereafter, the encoded image data stored in the memory is decoded, and the decoded result is output to a display device. Thus, it is possible to reduce the size of a memory included in a display driving apparatus without deteriorating the quality of an image displayed.
摘要:
A method and apparatus for encoding and decoding image data. The method of encoding image data includes spatially predicting pixel values of a one-dimensional block of an image using blocks spatially adjacent to the one-dimensional block or temporally predicting the pixel values of the one-dimensional block using a temporally previous frame; transforming and quantizing the pixel values of the one-dimensional block; and generating bit streams for a one-dimensional conversion block when the transformed and quantized one-dimensional block is defined as the one-dimensional conversion block. Therefore, since the method and apparatus encode and decode image data in one-dimensional block units, real-time encoding and decoding can be achieved. In addition, compression efficiency can be enhanced while minimizing visual degradation of image quality.
摘要:
A method and an apparatus for transforming/inverse transforming and quantizing/dequantizing a color image and a method and an apparatus for encoding/decoding a color image using the method and the apparatus. The method of transforming and quantizing the color image includes: transforming a color image into a frequency domain image; differently applying a transformation for removing a redundancy of direct current components of the frequency domain image depending on whether the color image is residual transformed and a macroblock estimation mode; and quantizing the frequency domain image from which the redundancy has been removed.