公开(公告)号：US08131109B2

公开(公告)日：2012-03-06

申请号：US11760852

申请日：2007-06-11

申请人： Sung-hee Kim ,  Seung-joon Yang ,  Rae-hong Park ,  Bo-ra Lim

发明人： Sung-hee Kim ,  Seung-joon Yang ,  Rae-hong Park ,  Bo-ra Lim

IPC分类号： G06K9/36

CPC分类号： G06T5/50 ,  G06T5/009 ,  G06T5/40 ,  G06T2207/20021

摘要： Provided are an image processing method and apparatus for enhancing contrast. The image processing apparatus includes a determination unit that determines whether contrast enhancement processing should be performed on an input image; an intensity mapping unit that generates a plurality of images having different exposure times from the input image, using intensity mapping, if the contrast enhancement processing should be performed on the input image; and an image composition unit that composes the plurality of images into a composed image. Therefore, it is possible to reduce a color change or a false contour phenomenon that are generated in a related art contrast enhancement process.

摘要翻译： 提供了一种用于增强对比度的图像处理方法和装置。 图像处理装置包括确定单元，其确定是否应当对输入图像执行对比度增强处理; 强度映射单元，如果对输入图像执行对比度增强处理，则使用强度映射来生成具有与输入图像不同的曝光时间的多个图像; 以及将多个图像组成合成图像的图像合成单元。 因此，可以减少在相关技术的对比度增强处理中产生的颜色变化或假轮廓现象。

公开(公告)号：US20070286287A1

公开(公告)日：2007-12-13

申请号：US11761219

申请日：2007-06-11

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

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

IPC分类号： H04N11/02

CPC分类号： H04N19/186 ,  H04N19/51 ,  H04N19/80 ,  H04N19/86

摘要： 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.

摘要翻译： 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。

公开(公告)号：US07986854B2

公开(公告)日：2011-07-26

申请号：US11761219

申请日：2007-06-11

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

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

IPC分类号： G06K9/40

CPC分类号： H04N19/186 ,  H04N19/51 ,  H04N19/80 ,  H04N19/86

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20070291170A1

公开(公告)日：2007-12-20

申请号：US11760806

申请日：2007-06-11

申请人： Seung-hoon Han ,  Seung-joon Yang ,  Rae-hong Park ,  Jun-yong Kim

发明人： Seung-hoon Han ,  Seung-joon Yang ,  Rae-hong Park ,  Jun-yong Kim

IPC分类号： G06K9/32 ,  H04N7/01

CPC分类号： G06T3/4084 ,  G06T7/13 ,  H04N7/014 ,  H04N7/0142

摘要： An image resolution conversion method and apparatus based on a projection onto convex sets (POCS) method are provided. The image resolution conversion method comprises detecting an edge region and a direction of the edge region in an input low-resolution image frame in order to generate an edge map and edge direction information, generating a directional point spread function based on the edge map and the edge direction information, interpolating the input low-resolution image frame into a high-resolution image frame, generating a residual term based on the input low-resolution image frame, the high-resolution image frame, and the directional point spread function, and renewing the high-resolution image frame according to a result of comparing the residual term with a threshold.

摘要翻译： 提供了一种基于投影到凸集（POCS）方法的图像分辨率转换方法和装置。 图像分辨率转换方法包括检测输入低分辨率图像帧中的边缘区域和边缘区域的方向，以便生成边缘图和边缘方向信息，基于边缘图生成定向点扩展函数， 边缘方向信息，将输入的低分辨率图像帧内插到高分辨率图像帧中，基于输入的低分辨率图像帧，高分辨率图像帧和方向点扩展函数生成残余项，并且更新 根据将剩余项与阈值进行比较的结果的高分辨率图像帧。

公开(公告)号：US20130070965A1

公开(公告)日：2013-03-21

申请号：US13562568

申请日：2012-07-31

申请人： Soon-geun Jang ,  Dong-kyu Lee ,  Rae-hong Park

发明人： Soon-geun Jang ,  Dong-kyu Lee ,  Rae-hong Park

IPC分类号： G06K9/60

CPC分类号： G06K9/60 ,  G06T5/007 ,  G06T5/50 ,  G06T2207/10004 ,  G06T2207/10144 ,  G06T2207/20208 ,  G06T2207/20221 ,  H04N5/23254 ,  H04N5/235 ,  H04N5/2355

摘要： An image processing method and apparatus for obtaining a wide dynamic range image, the method including: obtaining a plurality of low dynamic range images having different exposure levels for a same scene; generating motion map representing whether motion occurred, depending on brightness ranks of the plurality of low dynamic range images; obtaining weights for the plurality of low dynamic range images; generating a weight map by combining the weights and the motion map; and generating a wide dynamic range image by fusing the plurality of low dynamic range images and the weight map. According to the image processing method and apparatus, it is possible to accurately detect motion area using a rank map, obtain a wide dynamic range image at a higher operation speed, and reduce a possibility that a phenomenon such as color warping occurs by directly combining images without using a tone mapping process.

摘要翻译： 一种用于获得宽动态范围图像的图像处理方法和装置，所述方法包括：获得对于相同场景具有不同曝光水平的多个低动态范围图像; 根据所述多个低动态范围图像的亮度级别生成表示运动是否发生的运动图; 获得所述多个低动态范围图像的权重; 通过组合权重和运动图来生成权重图; 以及通过融合所述多个低动态范围图像和所述权重图来生成宽动态范围图像。 根据图像处理方法和装置，可以使用等级图精确地检测运动区域，以更高的运行速度获得宽的动态范围图像，并且通过直接组合图像来减少发生诸如颜色翘曲的现象的可能性 而不使用色调映射过程。

公开(公告)号：US20060285020A1

公开(公告)日：2006-12-21

申请号：US11302192

申请日：2005-12-14

申请人： Dong-hyuk Shin ,  Rae-hong Park

发明人： Dong-hyuk Shin ,  Rae-hong Park

IPC分类号： H04N5/00 ,  H04N5/14

CPC分类号： H04N5/21 ,  H04N5/145

摘要： A spatio-temporal noise removal method using block classification that removes noise from a third field by using first, second, and third fields which are continuously inputted. The method includes generating first, second, and third motion-compensated fields; classifying blocks of the third field into a uniform region and a non-uniform region based on a variance value of a generated difference image; performing temporal filtering over every block of the third field; performing spatio-temporal filtering over every block of the first and third motion-compensated fields and the third field and performing the temporal filtering over the every block of the third field based on spatially-filtered value; and outputting a third noise-removed field by applying a weighted value to the temporal-filtered value and the spatio-temporal-filtered value.

公开(公告)号：US08571312B2

公开(公告)日：2013-10-29

申请号：US12689312

申请日：2010-01-19

申请人： Soon-keun Chang ,  Rae-hong Park ,  Ji-won Lee

发明人： Soon-keun Chang ,  Rae-hong Park ,  Ji-won Lee

IPC分类号： G06K9/00

CPC分类号： H04N9/045 ,  G06T3/4007 ,  H04N2209/046

摘要： An image interpolating method and apparatus, in which horizontal and vertical Differences of Absolute Inter-channel Differences (DAIDs) are calculated from a color filter array (CFA) image, and an unknown pixel is interpolated in horizontal and vertical directions estimated in consideration of the DAIDs of R, G, and B pixels. Therefore, the image interpolating method and apparatus provide a large Peak Signal and Noise Ratio (PSNR), a Structural Similarity (SSIM), and high visual quality images.

摘要翻译： 一种图像插值方法和装置，其中从滤色器阵列（CFA）图像计算绝对通道间差异（DAID）的水平和垂直差异，并且在考虑到 R，G和B像素的DAID。 因此，图像内插方法和装置提供了大的峰值信噪比（PSNR），结构相似性（SSIM）和高视觉质量的图像。

公开(公告)号：US20100328482A1

公开(公告)日：2010-12-30

申请号：US12823386

申请日：2010-06-25

申请人： Soon-keun Chang ,  Rae-hong Park ,  Tae-hong Min

发明人： Soon-keun Chang ,  Rae-hong Park ,  Tae-hong Min

IPC分类号： H04N5/225 ,  G06K9/62

CPC分类号： H04N5/235 ,  G06T5/50 ,  G06T2207/20208 ,  H04N5/2355

摘要： A digital photographing apparatus capable of acquiring data about an image having a wide dynamic range and a high grayscale resolution, a method of controlling the digital photographing apparatus, and a recording medium storing a program to implement the method are provided. An embodiment includes an imaging device that acquires a reference image and additional images at different exposures and a multi-level threshold map generation unit that classifies the pixels of the images into levels according to brightness. The embodiment further includes a motion data acquiring unit that acquires motion data for each pixel based on its respective brightness level and a first weight data acquiring unit that acquires first weight data based on the motion data of each pixel. In addition, the embodiment includes a final image data acquiring unit that synthesizes the pixels of the reference image and the additional images based on first weight data.

摘要翻译： 提供一种数字摄影装置，其能够获取关于具有宽的动态范围和高灰度分辨率的图像的数据，控制数字摄影装置的方法以及存储实现该方法的程序的记录介质。 一个实施例包括获取参考图像和不同曝光下的附加图像的成像装置以及根据亮度将图像的像素分级为多级阈值图生成单元。 该实施例还包括运动数据获取单元，其基于其各自的亮度级别获取每个像素的运动数据，以及第一权重数据获取单元，其基于每个像素的运动数据获取第一权重数据。 此外，实施例包括最终图像数据获取单元，其基于第一权重数据来合成参考图像的像素和附加图像。

公开(公告)号：US20130071025A1

公开(公告)日：2013-03-21

申请号：US13591449

申请日：2012-08-22

申请人： Soon-geun Jang ,  Rae-hong Park ,  Young-il Pyo

发明人： Soon-geun Jang ,  Rae-hong Park ,  Young-il Pyo

IPC分类号： G06K9/40

CPC分类号： G06K9/40 ,  G06T5/002 ,  G06T2207/20064 ,  G06T2207/20192 ,  H04N1/58 ,  H04N5/217 ,  H04N9/045

摘要： An image processing method and an image processing apparatus for removing noise from an image are disclosed. A provided image processing method includes: dividing an input image into a luminance signal and a chrominance signal; removing noise from the luminance signal; restoring luminance signal present in the noise removed from the luminance signal; removing noise from the chrominance signal; and combining the luminance signal and the chrominance signal from which the noises are removed. Accordingly, an image of which an edge component is well preserved and a degree of color noise is low is generated not only in a general environment but also in a low light level and high sensitivity environment having a large amount of noise.

摘要翻译： 公开了一种用于从图像中去除噪声的图像处理方法和图像处理装置。 提供的图像处理方法包括：将输入图像划分为亮度信号和色度信号; 从亮度信号中去除噪声; 恢复从亮度信号中去除的噪声中存在的亮度信号; 从色度信号中消除噪声; 并且组合亮度信号和除去噪声的色度信号。 因此，不仅在一般环境中，而且在具有大量噪声的低光级和高灵敏度环境中也产生边缘分量良好地保存并且颜色噪声程度低的图像。

公开(公告)号：US20120038797A1

公开(公告)日：2012-02-16

申请号：US13034764

申请日：2011-02-25

申请人： Soon-geun Jang ,  Tae-hong Min ,  Rae-hong Park ,  Hwan-soon Sung

发明人： Soon-geun Jang ,  Tae-hong Min ,  Rae-hong Park ,  Hwan-soon Sung

IPC分类号： H04N5/217

CPC分类号： H04N5/2355 ,  G06T5/008 ,  G06T5/50 ,  G06T2207/10144

摘要： An image processing apparatus and an image processing method, the method including: providing one or more low dynamic range images having different exposure levels; classifying each of the one of more low dynamic range images as a saturation region, an under-saturation region, and a non-saturation region with respect to an intensity value; generating feature maps indicating a similarity between patterns of the non-saturation regions; generating final feature maps converting pixels included in the feature maps into moving pixels and non-moving pixels; defining moving regions and non-moving regions included in the one or more low dynamic range images; removing noise from the moving regions and the non-moving regions by using a first noise reduction filter for the moving regions and a second noise reduction filter for the non-moving regions; and generating a radiance map corresponding to the one or more low dynamic range images.

摘要翻译： 一种图像处理装置和图像处理方法，所述方法包括：提供具有不同曝光水平的一个或多个低动态范围图像; 将更低的动态范围图像中的每一个分类为饱和区域，欠饱和区域和相对于强度值的非饱和区域; 生成指示非饱和区域的图案之间的相似性的特征图; 生成将特征图中包括的像素转换为移动像素和非移动像素的最终特征图; 定义包括在所述一个或多个低动态范围图像中的移动区域和非移动区域; 通过使用用于移动区域的第一噪声降低滤波器和用于非移动区域的第二降噪滤波器来从移动区域和非移动区域去除噪声; 以及生成对应于所述一个或多个低动态范围图像的辐射图。