公开(公告)号：US07397957B2

公开(公告)日：2008-07-08

申请号：US10824760

申请日：2004-04-14

Applicant: Dae-Won Kim ,  Hyun-Seung Lee ,  Dae-Kyu Shin

Inventor： Dae-Won Kim ,  Hyun-Seung Lee ,  Dae-Kyu Shin

IPC: G06K9/46 ,  H04B1/66 ,  H04N7/12

CPC classification number: H04N19/1883 ,  H04N19/14 ,  H04N19/63

Abstract: Disclosed is a discrete wavelet transform (DWT) unit for encoding and decoding still images based on the energy of each block. The DWT unit includes an energy calculating section for calculating energy of an input image in unit of a block having a predetermined number of pixels, an image decomposing section for performing three-level decomposition of the image of the block by decomposing a band at which a low frequency component is distributed three times, and a coefficient substituting section for substituting 0 (zero) for bands at which a high frequency component is distributed among the three-level decomposed bands.

Abstract translation: 公开了一种基于每个块的能量对静止图像进行编码和解码的离散小波变换（DWT）单元。 DWT单元包括能量计算部分，用于以具有预定数量的像素的块为单位计算输入图像的能量;图像分解部分，用于通过分解所述块的图像来执行块的图像的三级分解， 低频分量被分配三次，而在三级分解频带中分配有高频分量的频带的0（零）的系数替换部分。

公开(公告)号：US07302015B2

公开(公告)日：2007-11-27

申请号：US10428629

申请日：2003-05-02

Applicant: Dae-Won Kim ,  Hyun-Seung Lee

Inventor： Dae-Won Kim ,  Hyun-Seung Lee

IPC: H03D3/18

CPC classification number: H04N19/557 ,  H04N5/145

Abstract: A motion estimation method for moving picture compression coding that finds a motion vector at a high speed without degrading compression rate and image quality that includes estimating an initial motion point; performing a Newton-Raphson Method (“NRM”) using a Mean Absolute Difference of the estimated motion point as an objective function, and finding a new motion point; determining whether a difference between the new and estimated motion points is less than a minimum error range, estimating the new motion point as the initial motion point when the difference is more than the minimum error range, and performing the NRM; and determining whether a difference between the new and estimated motion points is less than a minimum error range, estimating the new motion point as a final motion point when the difference is less than the minimum error range, and determining a motion vector.

Abstract translation: 一种用于运动图像压缩编码的运动估计方法，用于在不降低包括估计初始运动点的压缩率和图像质量的情况下高速找到运​​动矢量; 使用估计运动点的平均绝对差作为目标函数执行牛顿 - 拉夫逊方法（“NRM”），并且找到新的运动点; 确定新的和估计的运动点之间的差是否小于最小误差范围，当差值大于最小误差范围时，将新的运动点估计为初始运动点，并执行NRM; 以及确定所述新估计运动点和所估计的运动点之间的差是否小于最小误差范围，当所述差小于所述最小误差范围时，将所述新运动点估计为最终运动点，以及确定运动矢量。

公开(公告)号：US20050063461A1

公开(公告)日：2005-03-24

申请号：US10925623

申请日：2004-08-25

Applicant: Seung-Cheol Lee ,  Dae-Kyu Shin ,  Ji-Ho Park ,  Hyun-Seung Lee

Inventor： Seung-Cheol Lee ,  Dae-Kyu Shin ,  Ji-Ho Park ,  Hyun-Seung Lee

IPC: H04N7/32 ,  H04N7/12 ,  H04N7/26

CPC classification number: H04N19/174 ,  H04N19/124 ,  H04N19/139 ,  H04N19/14 ,  H04N19/172 ,  H04N19/176

Abstract: An H.263/MPEG video encoder using DCT in a mobile communication terminal. The H.263/MPEG video encoder controls a quantization value using granularity analysis by motion estimation and efficiently controls bit rates. The H.263/MPEG video encoder performs DCT for an input image (N−1), quantizes the input image to output the input image as a video stream, decodes the quantized signal by means of inverse quantization (IQ) and inverse discrete cosine transform (IDCT), and performs motion estimation in comparison with a next input image (N). The H.263/MPEG video encoder includes a granularity analyzing section for analyzing granularity using a result of performing the motion estimation, a granularity control section for controlling a quantization value for the quantization according to an analysis result of the granularity analyzing section, and a frame rate control section for controlling a frame speed of an output of the video stream.

Abstract translation: 一种在移动通信终端中使用DCT的H.263 / MPEG视频编码器。 H.263 / MPEG视频编码器通过运动估计使用粒度分析来控制量化值，并有效地控制比特率。 H.263 / MPEG视频编码器对输入图像（N-1）进行DCT，对输入图像进行量化，将输入图像输出为视频流，通过逆量化（IQ）和反相离散余弦对量化信号进行解码 变换（IDCT），并且与下一个输入图像（N）进行运动估计。 H.263 / MPEG视频编码器包括：使用执行运动估计的结果分析粒度的粒度分析部分;粒度控制部分，用于根据粒度分析部分的分析结果控制量化量化值;以及 帧速控制部分，用于控制视频流的输出的帧速度。

公开(公告)号：US20050025373A1

公开(公告)日：2005-02-03

申请号：US10702745

申请日：2003-11-06

Applicant: Hyun-Seung Lee ,  Ji-Ho Park ,  Dae-Kyu Shin ,  Seung-Cheol Lee

Inventor： Hyun-Seung Lee ,  Ji-Ho Park ,  Dae-Kyu Shin ,  Seung-Cheol Lee

IPC: H04N7/24 ,  G06K9/36 ,  H04N7/26 ,  H04N7/30 ,  H04N7/34

CPC classification number: H04N19/40 ,  H04N19/124 ,  H04N19/157 ,  H04N19/196 ,  H04N19/42 ,  H04N19/593 ,  H04N19/61 ,  H04N19/63 ,  H04N19/70 ,  H04N19/91

Abstract: An MPEG-4 encoder utilizing an H.263 multimedia chip. The MPEG-4 encoder includes a DC (Direct Current) predictor for predicting a DC component of the image frame encoded by an H.263 standard upon receiving a prescribed MPEG-4 quantization value, and an MPEG-4 reconstruction image memory for converting the H.263 reconstruction image into an MPEG-4 reconstruction image, and storing the MPEG-4 reconstruction image. The MPEG-4 encoder removes spatial redundancy from source image data entered in frame units using a prescribed H.263 quantization value, predicts a DC component of an image frame having no spatial redundancy using a prescribed MPEG-4 quantization value, performs a VLC (Variable Length Coding) process on the image frame using the predicted DC component, and outputs the VLC-processed image frame in the form of an MPEG-4 bit stream. The MPEG-4 encoder reconstructs the image frame having no spatial redundancy, stores the reconstructed image frame, converts the reconstructed image frame into an MPEG-4 frame, stores the MPEG-4 frame, compares the stored image frame with a newly-entered next frame, and removes temporal redundancy according to a result of the comparison.

Abstract translation: 一种使用H.263多媒体芯片的MPEG-4编码器。 MPEG-4编码器包括DC（直流）预测器，用于在接收到规定的MPEG-4量化值时预测由H.263标准编码的图像帧的DC分量，以及MPEG-4重建图像存储器，用于将 H.263重建图像转换为MPEG-4重建图像，并存储MPEG-4重建图像。 MPEG-4编码器使用规定的H.263量化值从以帧为单位输入的源图像数据中去除空间冗余，使用规定的MPEG-4量化值预测没有空间冗余的图像帧的DC分量，执行VLC（ 可变长度编码）处理，并且以MPEG-4比特流的形式输出VLC处理的图像帧。 MPEG-4编码器重建没有空间冗余的图像帧，存储重建的图像帧，将重建的图像帧转换成MPEG-4帧，存储MPEG-4帧，将存储的图像帧与新输入的下一个 并根据比较结果去除时间冗余。

公开(公告)号：US20050025372A1

公开(公告)日：2005-02-03

申请号：US10824760

申请日：2004-04-14

Applicant: Dae-Won Kim ,  Hyun-Seung Lee ,  Dae-Kyu Shih

Inventor： Dae-Won Kim ,  Hyun-Seung Lee ,  Dae-Kyu Shih

IPC: G06T1/00 ,  G06K9/36 ,  G06T9/00 ,  H04N7/26

CPC classification number: H04N19/1883 ,  H04N19/14 ,  H04N19/63

Abstract: Disclosed is a discrete wavelet transform (DWT) unit for encoding and decoding still images based on the energy of each block. The DWT unit includes an energy calculating section for calculating energy of an input image in unit of a block having a predetermined number of pixels, an image decomposing section for performing three-level decomposition of the image of the block by decomposing a band at which a low frequency component is distributed three times, and a coefficient substituting section for substituting 0 (zero) for bands at which a high frequency component is distributed among the three-level decomposed bands.

Abstract translation: 公开了一种基于每个块的能量对静止图像进行编码和解码的离散小波变换（DWT）单元。 DWT单元包括能量计算部分，用于以具有预定数量的像素的块为单位计算输入图像的能量;图像分解部分，用于通过分解所述块的图像来执行块的图像的三级分解， 低频分量被分配三次，而在三级分解频带中分配有高频分量的频带的0（零）的系数替换部分。

公开(公告)号：US20090290175A1

公开(公告)日：2009-11-26

申请号：US12389924

申请日：2009-02-20

Applicant: Hyun-seung LEE

Inventor： Hyun-seung LEE

IPC: H04N1/60 ,  G06F3/12 ,  G06K9/36

CPC classification number: G06F3/1257 ,  G06F3/1208

Abstract: Provided are a printing method and apparatus. The printing method includes receiving data regarding a document to be printed from a host, applying a predetermined effect to an object included in the document to be printed, and printing the document including the object to which the predetermined effect is applied. Thus, when a document created by a host and transmitted to a printing apparatus to be printed, cannot be corrected by the host, an effect can be applied to the document by the printing apparatus.

Abstract translation: 提供了一种打印方法和装置。 打印方法包括从主机接收关于要打印的文档的数据，对包括在要打印的文档中的对象应用预定的效果，以及打印包含具有预定效果的对象的文档。 因此，当由主机创建并传送到要打印的打印设备的文档不能被主机校正时，可以通过打印设备对文档应用效果。

公开(公告)号：US20070286287A1

公开(公告)日：2007-12-13

申请号：US11761219

申请日：2007-06-11

Applicant: Sung-hee KIM ,  Seung-Joon Yang ,  Rae-hong Park ,  Ji-won Lee ,  Hyun-seung Lee ,  Jun-young Kim ,  Bo-ra Lim

Inventor： Sung-hee KIM ,  Seung-Joon Yang ,  Rae-hong Park ,  Ji-won Lee ,  Hyun-seung Lee ,  Jun-young Kim ,  Bo-ra Lim

IPC: H04N11/02

CPC classification number: H04N19/186 ,  H04N19/51 ,  H04N19/80 ,  H04N19/86

Abstract: A method of improving picture quality in a composite video burst signal includes dividing the composite video burst signal into a plurality of frequency bands using a low pass filter and a high pass filter, performing wavelet packet filtering of frequency bands including a chrominance signal having energy higher than a specified threshold among the plurality of frequency bands, and performing Wiener filtering of frequency bands including a chrominance signal having energy lower than a specified threshold.

Abstract translation: 一种提高复合视频脉冲串信号中的图像质量的方法包括：使用低通滤波器和高通滤波器将复合视频脉冲串信号分成多个频带，对包括能量较高的色度信号的频带进行小波包滤波 并且对包括具有低于指定阈值的能量的色度信号的频带进行维纳滤波。