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公开(公告)号：KR1020110060256A
公开(公告)日：2011-06-08
申请号：KR1020090116790
申请日：2009-11-30
Applicant: 한국전자통신연구원
IPC: H04N19/103 , H04N19/51
CPC classification number: H04N19/91 , H04N19/593
Abstract: PURPOSE: A hybrid prediction apparatus and a method thereof are provided to reduce the capacity of compressed images. CONSTITUTION: Two or more prediction units(100,200) respectively outputs a prediction pattern through correlation between pixels of a video frame. A selective processing unit(300) obtains an error per pixel from the prediction pattern of the two or more prediction units. The selective processing unit selects a prediction pattern having a relatively small error. An entropy coder(400) performs entropy encoding of the selected prediction pattern.
Abstract translation: 目的：提供一种混合预测装置及其方法，以减小压缩图像的容量。 构成：通过视频帧的像素之间的相关，两个以上的预测单元（100,200）分别输出预测图案。 选择处理单元（300）从两个或更多个预测单元的预测图案中获得每像素的误差。 选择处理单元选择具有相对较小误差的预测图案。 熵编码器（400）执行所选择的预测模式的熵编码。
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公开(公告)号：KR101491864B1
公开(公告)日：2015-02-11
申请号：KR1020090116790
申请日：2009-11-30
Applicant: 한국전자통신연구원
IPC: H04N19/103 , H04N19/51
CPC classification number: H04N19/91 , H04N19/593
Abstract: 본 발명에 의하면, 영상 프레임의 화소별 예측을 수행하는 다수의 예측부를 구비하여 선택적으로 이용함으로써, 영상의 기존 압축 방식 및 예측 방식을 개선하고, 특정 화소에서 과도하게 발생하는 예측 방식의 성능을 보완하는 엔트로피 부호화를 위한 하이브리드 예측 장치 및 그 방법을 제공한다.
영상, 화소, 엔트로피 부호화, 하이브리드, 예측 장치-
公开(公告)号：KR1020110060181A
公开(公告)日：2011-06-08
申请号：KR1020090116693
申请日：2009-11-30
Applicant: 한국전자통신연구원
CPC classification number: H04N19/146 , H04N19/105 , H04N19/196 , H04N19/593 , H03M7/55 , H04N19/50 , H04N19/65 , H04N19/85
Abstract: PURPOSE: According to transmission bandwidth or storage capacity, a lossless/semi lossless image compression apparatus and method are provided to minimize a loss of an image. CONSTITUTION: In order to encode suitably for a target encoding quantity by the usage of the encoded amount of bits, a rate control unit(120) controls an allowable error range in a slice unit. A prediction and modulation unit(150) predict the pixel of a current position with the usage of adjacent pixels. The prediction and modulation unit calculates an error between pixel values. The prediction and modulation modulates the error. An encoder(160) encodes the modulated error.
Abstract translation: 目的：根据传输带宽或存储容量，提供无损/半无损图像压缩设备和方法，以最大限度地减少图像丢失。 构成：为了通过使用编码量的比特适当地编码目标编码量，速率控制单元（120）控制片单元中的容许误差范围。 预测和调制单元（150）利用相邻像素来预测当前位置的像素。 预测和调制单元计算像素值之间的误差。 预测和调制调制误差。 编码器（160）对调制的误差进行编码。
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