Abstract:
Provided is a multilayer picture encoding/decoding apparatus and method for reducing a dynamic range of residual pictures occurring in enhancement layers. The multilayer picture encoding method includes performing format down-conversion on an input picture, and generating a lower layer bitstream by encoding the format down-converted input picture; performing format up-conversion by adaptively or selectively applying a 1-dimensional (1-D) prediction filter to a picture of the lower layer depending on whether a lower layer prediction flag is set or not; and calculating a residual picture between the input picture and the format up-converted picture, and generating an enhancement bitstream by encoding the calculated residual picture.
Abstract:
A method of encoding an image includes obtaining a quantization parameter; determining a size of a smoothing block based on the quantization parameter, determining threshold values based on a main pixel in the smoothing block, selecting a pixel having a pixel value between the threshold values, from among pixels included in the smoothing block, performing a smoothing operation with respect to the main pixel based on the pixel value of the selected pixel, and encoding an image with respect to which the smoothing operation is performed.
Abstract:
An electronic device and a method of extracting a color in the electronic device are provided. The electronic device includes a display unit configured to display an image and a controller configured to extract at least one color value from the image, and to extract a color value satisfying a range of color deviation from the extracted color values.