Abstract: This application describes method and apparatus for color noise reduction to enhance the quality of color images. An example method first takes a color image as its input and converts it into a Luminance-Chrominance color space, resulting in an YUV image. This YUV representation consists of a Y-channel (Luminance information), which encapsulates the luminance information responsible for the image's brightness, and UV-channels, which represent the chrominance information responsible for the color information. Then a guided filter is created using the Y-channel of the YUV image. The guided filter acts as a reference and assists in refining the subsequent noise reduction steps. With the guided filter in place, the method performs color noise reduction in the UV-channels of the YUV image, where the color noise is primarily present, resulting in smoother and cleaner color values.

Abstract: A method for presenting recommendation information includes: receiving a data obtaining request from a client terminal, recording a first address of the client terminal at this time and presenting corresponding recommendation information for the client terminal; receiving a response message sent from the client terminal after the client terminal has played the recommendation information, recording a second address of the client terminal at this time, and storing a corresponding relationship between the first address and the second address into an address data file; reading a specified address from a region address database which is corresponding to a specified region, and obtaining corresponding relationships each with the first address being the specified address from the address data file; in case of determining that the specified address has been converted via the corresponding relationships, not presenting recommendation information corresponding to the specified region to the specified address.

Abstract: A method for presenting recommendation information includes: receiving a data obtaining request from a client terminal, recording a first address of the client terminal at this time and presenting corresponding recommendation information for the client terminal; receiving a response message sent from the client terminal after the client terminal has played the recommendation information, recording a second address of the client terminal at this time, and storing a corresponding relationship between the first address and the second address into an address data file; reading a specified address from a region address database which is corresponding to a specified region, and obtaining corresponding relationships each with the first address being the specified address from the address data file; in case of determining that the specified address has been converted via the corresponding relationships, not presenting recommendation information corresponding to the specified region to the specified address.