Patent application number | Description | Published |
20080298465 | ENCODING CONTROL APPARATUS, ENCODING CONTROL METHOD, AND STORAGE MEDIUM - An encoding control apparatus is disclosed that includes a variance calculation unit configured to calculate a variance of an encoding target macroblock; a sum-of-absolute-difference calculation unit configured to calculate a sum of absolute differences between the encoding target macroblock and a reference macroblock; a setting unit configured to set, based on the variance and the sum of absolute differences, a standard for determining whether to skip encoding of the encoding target macroblock; a prediction unit configured to perform motion compensation prediction on the encoding target macroblock to obtain a motion-compensated prediction value; and a determination unit configured to determine whether to skip encoding of the encoding target macroblock by comparing the motion-compensated prediction value with the standard. Related apparatuses and methods are also disclosed. | 12-04-2008 |
20090086092 | IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD THEREOF - An image processing apparatus detects an amount of pixel motion in a plurality of field images included in interlace image data, and determines a pixel region having a large motion by comparing the amount of the motion of the detected pixel to a predetermined threshold value. An image processing apparatus combines a predetermined pattern with the pixel region that has a large motion and is converted from the interlace image. | 04-02-2009 |
20090116555 | IMAGE ENCODING APPARATUS, METHOD OF CONTROLLING THE SAME, AND COMPUTER PROGRAM - An image encoding apparatus which encodes picture data is provided. The apparatus comprises an encoding unit configured to encode a picture to be encoded; a decoding unit configured to decode the encoded picture; an SN ratio calculation unit configured to calculate an SN ratio using the picture to be encoded and a decoding result of the decoding unit; a setting unit configured to set a target SN ratio serving as an index of the SN ratio; a bitrate control unit configured to control a bitrate of the picture to be encoded based on the target SN ratio; and a motion detection unit configured to detect motion information between the picture to be encoded and another picture, wherein the bitrate control unit controls the bitrate based on the motion information, and a difference between the SN ratio and the target SN ratio. | 05-07-2009 |
20110249740 | MOVING IMAGE ENCODING APPARATUS, METHOD OF CONTROLLING THE SAME, AND COMPUTER READABLE STORAGE MEDIUM - A moving image encoding apparatus for dividing an image into image blocks and performing intra-prediction encoding of a target image block using pixel values of an image block adjacent to the target image block, comprises a prediction unit for performing intra-prediction in accordance with one of intra-prediction modes corresponding to divided block sizes and outputting intra-predicted image data for the target image block, a determination unit for, when the target image block is a low frequency band image, determining by detecting a change in the pixel value in the image block whether the target image block includes a gradation image, and a decision unit for, when it is determined that the target image block includes the gradation image, deciding a block size of the intra-prediction so as to cause the prediction unit to preferentially select a minimum block size of the divided block sizes. | 10-13-2011 |
20110280308 | MOVING IMAGE ENCODING APPARATUS AND METHOD OF CONTROLLING THE SAME - There is provided a moving image encoding apparatus for performing motion compensation prediction encoding. The apparatus comprises, among other things: a calculation unit configured to calculate, for each of a plurality of motion vectors, a difference between an encoding target block image and a reference block image which exists at a position moved based on the motion vector from a position in a reference image corresponding to the predetermined position; and a selection unit configured to select one motion vector from the plurality of motion vectors such that reducing a code amount when the selected motion vector is encoded and reducing the difference corresponding to the selected motion vector are achieved in predetermined balance. The predetermined balance gives priority to reducing the difference over reducing the code amount as a minimum value of a plurality of differences calculated by the calculation unit becomes smaller. | 11-17-2011 |
20120328006 | IMAGE CODING APPARATUS AND IMAGE CODING METHOD - At least one exemplary embodiment is directed to an image coding apparatus configured to encode moving image data including: a coding unit configured to encode each picture in the moving image data in a unit of a first block; a luminance change detection unit configured to divide the moving image data into a plurality of second blocks and to detect a luminance change block in which a luminance change occurred from the plurality of the second blocks in one picture; and a code amount adjustment unit configured to increase an amount of code allocated to the first block if the first block corresponds to the luminance change block detected by the luminance change detection unit. | 12-27-2012 |
20130343449 | IMAGE ENCODING APPARATUS AND ITS CONTROL METHOD - An image encoding apparatus for encoding image data including a plurality of frames, determines an encoding block size of an encoding subject frame of the image data based on the obtained image data, encodes the obtained image data on an encoding block unit basis in accordance with the determined encoding block size, controls a code amount of the size-decided encoding block based on encoding information regarding the current size-decided encoding block and the encoding block encoded before the current encoding block, operates predetermined encoding information of the encoding subject frame based on the encoding information, and restricts the encoding block size to be determined, in accordance with the operated predetermined encoding information. | 12-26-2013 |
20150130965 | ELECTRONIC DEVICE AND METHOD - An electronic device includes an image capture unit that generates first RAW image data; a compression unit that compresses the first RAW image data; a decompression unit that decompresses the compressed first RAW image data to generate second RAW image data; a development unit that generates first developed image data from the first RAW image data, and generates second developed image data from the second RAW image data; and a control unit that controls the compression unit based on the first developed image data and the second developed image data. | 05-14-2015 |