公开(公告)号：US20180184106A1

公开(公告)日：2018-06-28

申请号：US15391864

申请日：2016-12-28

Applicant: NOVATEK Microelectronics Corp.

Inventor： PENGYUAN HU ,  XI TIAN ,  Yen-Sung Chen ,  Yuanjia DU

IPC: H04N19/513 ,  H04N19/105 ,  H04N19/14

CPC classification number: H04N19/513 ,  H04N19/105 ,  H04N19/14 ,  H04N19/172 ,  H04N19/176 ,  H04N19/52 ,  H04N19/56

Abstract: A motion estimation method is provided which includes for each respective block of the current frame, selecting a candidate set associated with the current frame and a previous frame, the candidate set comprising at least one spatial candidate block in the current frame and a plurality of temporal candidate blocks in the previous frame, wherein the step of selecting the candidate set comprises: selecting the at least one spatial candidate block directly adjacent to the each respective block from the current frame; and selecting the plurality of temporal candidate blocks directly adjacent to a reference block from the previous frame; and determining a motion vector according to the candidate set for the each respective block of the current frame.

公开(公告)号：US20160012566A1

公开(公告)日：2016-01-14

申请号：US14329991

申请日：2014-07-14

Applicant: NOVATEK Microelectronics Corp.

Inventor： Lin ZHA ,  Chun-Wei CHEN ,  Yuanjia DU ,  Chun WANG

IPC: G06T3/40 ,  G06T5/00

CPC classification number: G06T3/4007 ,  G06F17/148 ,  G06F17/175 ,  G06K9/527 ,  G06T3/4084 ,  G06T5/001 ,  G06T2207/20064

Abstract: An image interpolation method is utilized for performing an interpolation on a source image to obtain a destination image. The image interpolation method includes performing a domain transformation on a plurality of pixels of the source image to generate a plurality of first coefficients and a plurality of second coefficients; respectively determining an data interrelationship degree in at least one direction of each first coefficient to generate a plurality of direction results; performing a first interpolation process on the plurality of first coefficients according to the plurality of direction results to generate a plurality of first destination coefficients; performing a second interpolation process on the plurality of second coefficients to generate a plurality of second destination coefficients; performing a reverse domain transformation on the plurality of first destination coefficients and the plurality of second destination coefficients to obtain the destination image.

Abstract translation: 利用图像插值方法对源图像进行插值以获得目的图像。 图像插值方法包括对源图像的多个像素执行域变换以生成多个第一系数和多个第二系数; 分别确定每个第一系数的至少一个方向上的数据相互关系度以产生多个方向结果; 根据所述多个方向结果对所述多个第一系数进行第一插值处理，以产生多个第一目的地系数; 对所述多个第二系数执行第二插值处理以生成多个第二目的地系数; 对所述多个第一目的地系数和所述多个第二目的地系数执行反向域变换以获得所述目的地图像。

公开(公告)号：US20180240436A1

公开(公告)日：2018-08-23

申请号：US15448508

申请日：2017-03-02

Applicant: NOVATEK Microelectronics Corp.

Inventor： Lei ZHANG ,  Danyu FU ,  Yuanjia DU ,  Yen-Tao LIAO

IPC: G09G5/02

CPC classification number: G09G5/02 ,  G09G2340/06

Abstract: A method of color conversion from a red-green-blue (RGB) color space to a red-green-blue-white (RGBW) color space on an input image includes calculating RGB and white gains with respect to an image block of the input image, calculating RGB and white gain with respect to a pixel of the image block, wherein the white gain with respect to the pixel of the image block is adjusted based on the RGB gain with respect to the pixel of the image block, and performing the RGB to RGBW color conversion based on the RGB and white gain with respect to the pixel of the image block, which improves local color and detail performance of an output image corresponding to the input image.

公开(公告)号：US20170126987A1

公开(公告)日：2017-05-04

申请号：US14967341

申请日：2015-12-13

Applicant: NOVATEK Microelectronics Corp.

Inventor： Xianbo Tan ,  Jianhua Liang ,  Yuanjia DU

IPC: H04N5/265 ,  H04N5/77 ,  G06T7/00 ,  H04N5/235

CPC classification number: H04N5/265 ,  G06T5/009 ,  G06T5/50 ,  G06T2207/10016 ,  G06T2207/10144 ,  H04N5/2351 ,  H04N5/2355 ,  H04N5/2356 ,  H04N5/35581 ,  H04N5/77

Abstract: A method is provided for reconstructing a high dynamic range (HDR) video from a low dynamic range (LDR) video. The LDR video is captured with dynamic exposure values by a regular camera device to store as an LDR video file. An exposure setting sequence and an LDR video frame sequence are retrieved from the LDR video file, where the exposure setting sequence corresponds to the LDR video frame sequence. The LDR video frame sequence is aligned to generate a compensated frame sequence to merge with the LDR video frame sequence, so as to generate an HDR frame sequence and reconstruct the HDR video.