摘要:
Provided are a method of motion estimation based on hybrid block matching using overlapping blocks in a video encoder, and an apparatus for converting a frame rate using the method. The method includes dividing a current frame into blocks and performing a full search algorithm on blocks sampled from the divided blocks, allocating motion vectors (fMV) obtained through linear interpolation to non-sampled blocks in the current frame based on a motion vector (iMV) obtained through the full search, and performing a fast search algorithm using the motion vector obtained through linear interpolation as a search starting point.
摘要:
A method of estimating motion about a plurality of sub-blocks forming a frame, the method including selecting full search blocks of a predetermined number among the plurality of sub-blocks, and regarding the other sub-blocks excluding the full search blocks as fast search blocks; calculating a motion vector of the full search block by full search motion estimation algorithm; calculating a first motion vector of the fast search block by interpolation based on the calculated motion vector of the full search block; and calculating a second motion vector of the fast search block by fast search motion estimation algorithm, using a block position indicated by the first motion vector as a starting position. Thus the present invention provides an apparatus and a method for estimating motion, in which the amount of operation is reduced and matching block is more precisely searched as compared with fast search algorithm.
摘要:
A method and apparatus are provided for encoding and decoding a multi-view moving picture. A method of estimating a disparity vector to encode a multi-view moving picture includes: estimating disparity vectors for a predetermined number of encoded macroblocks; and calculating disparity vectors of macroblocks adjacent to the encoded macroblocks using the estimated disparity vectors. Therefore, it is possible to quickly perform encoding of a multi-view moving picture and enhance compressibility of the multi-view moving picture.
摘要:
A method and apparatus are provided for encoding and decoding a multi-view video. The multi-view video encoding apparatus includes a disparity estimator receiving a current frame and a reference frame and estimating disparity vectors between the current frame and the reference frame by the block; a disparity deviation calculator calculating deviations between the estimated disparity vectors and calculating deviations of the deviations between the estimated disparity vectors; and an encoder encoding the multi-view video using the calculated deviations of the disparity vectors or the calculated deviations of the deviations of the disparity vectors. Therefore, it is possible to enhance compressibility of a multi-view video.
摘要:
An apparatus and method for controlling the depth of a three-dimensional image. The apparatus includes: a disparity measuring unit which measures the disparity between a left eye image and a right eye image; a physical distance calculating unit which calculates the physical distance between the left eye image and the right eye image based on the measured disparity and the physical characteristics of a display; and a depth controlling unit which controls the depth depending on the calculated physical distance. It is possible to adaptively control the disparity to control the depth when a user uses a stereoscopic three-dimensional display having a different screen size than a display used in a manufacturing environment.
摘要:
A receiver and transmitter in a multi-view stereo imaging system and a compression method applied thereto are provided for increasing a compression rate of an image. A first, second, and third image is captured at the same time by a first, second, and third camera consecutively located at certain intervals. Data is encoded and transmitted for one of the first and third image, data regarding non-transmission of a residual image created, when the residual image is lower than the threshold value, and the residual image, when the residual image is higher than the threshold value. Thus, the compression rate is increased since data compressed for the second image is not transmitted at the time when a difference between an intermediate image and the second image is lower than the threshold value.
摘要:
A method and apparatus for motion estimation in which the amount of computation can be reduced are provided. The method for motion estimation includes storing an interblock match difference calculated for a previous matching block to be motion estimated, calculating an interblock match difference for a current matching block to be motion estimated using the stored interblock match difference, and performing motion estimation on the current matching block using the interblock match difference calculated for the current matching block.
摘要:
A 2D and 3D image display apparatus including: a display panel forming an image by spatially modulating an input image signal; a polarization conversion device converting a polarization direction of a beam incident into the polarization conversion device according to a voltage applied in synchronization with the image signal; and a switching barrier unit including first polarization units having a first polarization direction and second polarization units having a second polarization direction in an alternate manner, and transmitting the beam passing the polarization conversion device through at least one of the first polarization unit and the second polarization unit. Therefore, a 3D image can be displayed without degrading a horizontal resolution thereof by using a combination of polarization devices with low fabrication costs, which may utilize a time-sequential display method.
摘要:
A display apparatus and a brightness adjusting method thereof are provided. The display apparatus includes a panel unit which displays an image signal, a backlight unit which provides a light to the panel unit to visualize the image signal, a luminance value regulator which calculates representative values to be applied for adjusting a brightness of a plurality of partial areas of the backlight unit corresponding to the input image signal, a contrast enhancer which compensates for a brightness of the image signal compromised by the representative value through a contrast enhancement, and a pixel value compensator which compensates for pixel values of the image signal compensated using the contrast enhancement. Accordingly, the contrast ratio of the entire image can be enhanced by compensating for the brightness loss of the image signal caused from the brightness adjustment of the luminous element, and the image quality can be more finely improved.
摘要:
A method of and an apparatus for converting a frame rate using time shifting and motion compensation. The frame rate converting method includes calculating an average motion vector magnitude between every two adjacent frames among a predetermined number of frames input in series determining a frame section corresponding to a maximum value among the average motion vector magnitudes calculated every two adjacent frames and generating a new frame by performing motion compensation, to which a predetermined proportion is applied, in the frame section having the maximum motion vector.