Abstract: Embodiments of the present invention disclose a method and an apparatus for enhancing color, and relate to the image processing field, so as to solve a case of over enhancement on a region having high luminance in an original image which is caused after enhancement processing is performed. A specific solution is: obtaining a luminance component of a currently processed image; performing Gaussian filtering processing on the luminance component to obtain an illumination component; obtaining a first reflection component of the currently processed image according to the luminance component and the illumination component; performing enhancement adjustment on the first reflection component to obtain a second reflection component; obtaining a luminance gain according to the luminance component and the second reflection component; and performing enhancement processing on the currently processed image, to obtain a first enhanced image. The present invention is applicable to a process of color enhancement.

Abstract: The present invention provides a multi-level bidirectional motion estimation method and device searching for matched blocks in a current frame and a previous frame respectively by using M1×M1 blocks of a to-be-interpolated frame as a mirror center, where the first to-be-determined matched block pair is a pair of matched blocks with a minimum sum of binary absolute difference SHAD value among all pairs of matched blocks searched out in the current frame and the previous frame; and if determined that the SHAD value of the first to-be-determined matched block pair is greater than or equal to an SHAD threshold, splitting the M1×M1 blocks into M2×M2 blocks, and searching for matched blocks again in the current frame and the previous frame respectively by using the M2×M2 blocks of the to-be-interpolated frame as a mirror center. Therefore, accuracy of motion estimation can be improved effectively, and image quality can be improved.

Abstract: The present invention provides a multi-level bidirectional motion estimation method and device. searching for matched blocks in a current frame and a previous frame respectively by using M1×M1 blocks of a to-be-interpolated frame as a mirror center, where the first to-be-determined matched block pair is a pair of matched blocks with a minimum sum of binary absolute difference SHAD value among all pairs of matched blocks searched out in the current frame and the previous frame; and if determined that the SHAD value of the first to-be-determined matched block pair is greater than or equal to an SHAD threshold, splitting the M1×M1 blocks into M2×M2 blocks, and searching for matched blocks again in the current frame and the previous frame respectively by using the M2×M2 blocks of the to-be-interpolated frame as a mirror center. Therefore, accuracy of motion estimation can be improved effectively, and image quality can be improved.

Abstract: Embodiments of the present invention disclose a method and an apparatus for enhancing color, and relate to the image processing field, so as to solve a case of over enhancement on a region having high luminance in an original image which is caused after enhancement processing is performed. A specific solution is: obtaining a luminance component of a currently processed image; performing Gaussian filtering processing on the luminance component to obtain an illumination component; obtaining a first reflection component of the currently processed image according to the luminance component and the illumination component; performing enhancement adjustment on the first reflection component to obtain a second reflection component; obtaining a luminance gain according to the luminance component and the second reflection component; and performing enhancement processing on the currently processed image, to obtain a first enhanced image. The present invention is applicable to a process of color enhancement.