Adaptive resolution transcoding for optimal visual quality

    公开(公告)号:US09615098B1

    公开(公告)日:2017-04-04

    申请号:US12627660

    申请日:2009-11-30

    IPC分类号: H04N19/134 H04N19/102

    摘要: An adaptive resolution transcoding system and method adaptively transcodes a source video with an optimized resolution and visual quality based on the video coding complexity (VCC) of the source video. The transcoding system is configured to receive a source video in its native format, and to obtain the video coding complexity score of the source video from a video coding complexity engine. The transcoding system is further configured to set a resolution adjustment level based on the complexity score. Based on the resolution adjustment level, the transcoding system determines an optimal output resolution for the source video for each video output format supported by the transcoding system. Responsive to a user selection of video output format, the transcoding system determines an optimal output resolution for the source video and encodes the source video with the determined optimal output resolution.

    Image processing apparatus, image forming apparatus and recording medium
    93.
    发明授权
    Image processing apparatus, image forming apparatus and recording medium 有权
    图像处理装置,图像形成装置和记录介质

    公开(公告)号:US09497486B2

    公开(公告)日:2016-11-15

    申请号:US14307813

    申请日:2014-06-18

    发明人: Masakazu Ohira

    摘要: An image processing apparatus includes a compression processing section that compresses image data obtained by reading a plurality of documents into a file, a specifying section that specifies an amount of information for an image of each of the plurality of documents, and a compression size calculation section that calculates a size after compression of an image of each document in accordance with the specified amount of information. The compression processing section compresses the image by using the size after compression calculated by the compression size calculation section.

    摘要翻译: 图像处理装置包括:压缩处理部,将通过将多个文档读取得到的图像数据压缩成文件;指定部,其指定多个文档中的每一个的图像的信息量;压缩尺寸计算部 其根据指定的信息量来计算每个文档的图像的压缩之后的大小。 压缩处理部通过使用由压缩尺寸计算部算出的压缩后的尺寸来压缩图像。

    Method for decoding a moving picture
    94.
    发明授权
    Method for decoding a moving picture 有权
    解码运动图像的方法

    公开(公告)号:US09451279B2

    公开(公告)日:2016-09-20

    申请号:US15062534

    申请日:2016-03-07

    发明人: Soo Mi Oh

    摘要: Provided is a method for decoding a moving picture. The method has the steps of generating a prediction block of a current block and generating a residual block of the current block. To generate the prediction block, a reference picture index and motion vector difference of the current block are obtained from a received bit stream, and spatial and temporal motion vector candidates are derived to construct a motion vector candidate list. A motion vector candidate corresponding to a motion vector index is determined as a motion vector predictor, and a motion vector of the current prediction unit is restored to generate a prediction block or the current block. Therefore, the motion vector encoded effectively using spatial and temporal motion vector candidates is correctly recovered and the complexity of a decoder is reduced.

    摘要翻译: 提供了一种用于对运动图像进行解码的方法。 该方法具有生成当前块的预测块并产生当前块的残余块的步骤。 为了产生预测块,从接收到的比特流中获得当前块的参考图像索引和运动矢量差,导出空间和时间运动矢量候选以构成运动矢量候选列表。 对应于运动矢量索引的运动矢量候选被确定为运动矢量预测器,并且恢复当前预测单元的运动矢量以产生预测块或当前块。 因此,使用空间和时间运动矢量候选有效地编码的运动矢量被正确恢复,并且解码器的复杂度降低。

    Data processing device and data processing method which compresses image data
    100.
    发明授权
    Data processing device and data processing method which compresses image data 有权
    压缩图像数据的数据处理装置和数据处理方法

    公开(公告)号:US09113173B2

    公开(公告)日:2015-08-18

    申请号:US13320822

    申请日:2011-03-10

    摘要: A data processing device includes an input unit which acquires image data, a meaning information extraction unit which extracts meaning information indicating a feature of an object image included in an image represented by the image data, a compression specifying unit which determines an initial value of a compression ratio, a compression unit which compresses the image data according to the compression ratio to generate compressed image data, and a determination unit which determines whether or not the meaning information can be extracted from the compressed image data. The compression specifying unit further changes the compression ratio from the initial value according to a result of the determination by the determination unit, and when the compression ratio is changed, the compression unit further compresses the image data according to the changed compression ratio to newly generate compressed image data.

    摘要翻译: 数据处理装置包括获取图像数据的输入单元,提取表示由图像数据表示的图像中包含的对象图像的特征的含义信息的含义信息提取单元,确定图像数据的初始值的压缩指定单元 压缩比,压缩单元,其根据压缩比压缩图像数据以产生压缩图像数据;以及确定单元,其确定是否可以从压缩图像数据中提取意义信息。 压缩指定单元还根据确定单元的确定结果从初始值改变压缩比,并且当压缩比改变时,压缩单元进一步根据改变的压缩比来压缩图像数据以重新生成 压缩图像数据。