摘要:
Provided are an apparatus and method for encoding and decoding an RGB image without color format conversion. The RGB image encoding method includes storing an RGB image and performing RGB-encoding on the stored RGB image, wherein the RGB encoding comprises performing intra prediction or inter prediction for encoding a current image on the basis of a previous RGB image. The apparatus includes an RGB decoding unit and an RGB image storage unit, which decoded and store RGB images, respectively, and inter/intra prediction unit performing inter-prediction or intra-prediction.
摘要:
A method and apparatus for compensating for illumination of a reference block and a method and apparatus for encoding an image, using the illumination compensation method and apparatus, are provided. The method of compensating for illumination of a reference block includes: predicting the mean values of pixels of a current block and a reference block, based on restored values of pixels neighboring the current block, and restored values of pixels neighboring the reference block; and based on the predicted mean value of the pixels of the current block, the predicted mean value of the pixels of the reference block, and the values of the pixels of the current block and the reference block, determining an illumination compensation parameter.
摘要:
Provided are an image encoding method and apparatus and an image decoding method and apparatus that are capable of canceling a correlation remaining in a residual image by predicting the residual image by using residual pixel values of restored neighboring pixels of a current block and then encoding only the difference between the residual image and a predicted image of the residual image, where the residual image is obtained using an inter color compensation algorithm that predicts one of a plurality of color component images constituting an image by using one of the remnants of the color component images.
摘要:
A method and apparatus for transmitting and receiving RGB codec-based moving pictures are provided. The RGB codec-based moving picture transmitting method includes performing RGB-encoding on an RGB image and generating an encoded RGB image; receiving an audio bit stream; and generating a transmission stream on the basis of the encoded RGB image and the audio bit stream, wherein the RGB-encoding is performed using intra prediction or inter prediction for encoding a current image on the basis of a previous RGB image. By receiving and transmitting RGB images without any color format conversion, picture quality deterioration is prevented.
摘要:
Provided are an image encoding/decoding method and apparatus, in which one of a plurality of color component images is predicted from a different color component image reconstructed using a correlation between the plurality of color component images. Using a reconstructed image of a first color component image selected from among the plurality of color component images forming a single color image, the other color component images are predicted.
摘要:
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.
摘要:
Provided are a bit rate control method and apparatus for intra-only coding, the method including calculating a similarity between at least one block group from among block groups including a plurality of macroblocks in a current frame to be encoded and at least one block group in a previous frame, which corresponds to the at least one block group in the current frame, determining a target bit amount of a current block group including a current macroblock using a video characteristic of the previous frame if the calculated similarity is greater than a threshold value, determining a target bit amount of the current macroblock based on the determined target bit amount of the current block group, and calculating a quantization parameter of the current macroblock based on the determined target bit amount of the current macroblock and the amount of bits generated for up to a previous macroblock.
摘要:
Provided are an illumination compensation method and apparatus and video encoding/decoding methods and apparatuses using the illumination compensation method. The illumination compensation method for a reference block used for motion estimation includes receiving pixel values of reconstructed neighboring pixels around a current block to be encoded and pixel values of reconstructed neighboring pixels around the reference block, and performing illumination compensation with respect to the reference block based on the input pixel values of reconstructed neighboring pixels around the current block and the input pixel values of reconstructed neighboring pixels around the reference block.