公开(公告)号：US08614750B2

公开(公告)日：2013-12-24

申请号：US12588516

申请日：2009-10-19

Applicant: Joo Hyun Kim ,  Bong Soon Kang ,  Sung Mok Lee ,  Won Woo Jang ,  Kyung Rin Kim ,  Won Tae Choi ,  Joo Young Ha

Inventor： Joo Hyun Kim ,  Bong Soon Kang ,  Sung Mok Lee ,  Won Woo Jang ,  Kyung Rin Kim ,  Won Tae Choi ,  Joo Young Ha

IPC: H04N5/228 ,  H04N9/73

CPC classification number: H04N9/735

Abstract: An apparatus for auto white balance includes a histogram generation unit writing respective histograms of Cb values and Cr values with regard to pixels included in an input image frame, a single-tone determination unit comparing respective maximum values of the histograms of Cb values and Cr values with a first threshold value, and determining the input image frame as a single-tone image if at least one of the maximum values is higher than the first threshold value, and an auto white balance gain computation unit computing and an auto white balance gain by using color information of an input image frame and outputting the computed auto white balance gain, wherein if the input image frame is determined to be a single-tone image, the auto white balance gain computation unit outputs an auto white balance gain computed with respect to a previous input image frame.

Abstract translation: 一种用于自动白平衡的装置包括直方图生成单元，其针对包括在输入图像帧中的像素写入相应的Cb值和Cr值的直方图;单色调确定单元，将Cb值和Cr值的直方图的相应最大值进行比较 具有第一阈值，并且如果所述最大值中的至少一个高于所述第一阈值，则将所述输入图像帧确定为单色图像，并且自动白平衡增益计算单元计算和自动白平衡增益由 使用输入图像帧的颜色信息并输出所计算的自动白平衡增益，其中如果输入图像帧被确定为单色图像，则自动白平衡增益计算单元输出相对于 先前的输入图像帧。

公开(公告)号：US20100194991A1

公开(公告)日：2010-08-05

申请号：US12588516

申请日：2009-10-19

Applicant: Joo Hyun Kim ,  Bong Soon Kang ,  Sung Mok Lee ,  Won Woo Jang ,  Kyung Rin Kim ,  Won Tae Choi ,  Joo Young Ha

Inventor： Joo Hyun Kim ,  Bong Soon Kang ,  Sung Mok Lee ,  Won Woo Jang ,  Kyung Rin Kim ,  Won Tae Choi ,  Joo Young Ha

IPC: H04N9/73 ,  G06K9/00

CPC classification number: H04N9/735

Abstract: An apparatus for auto white balance includes a histogram generation unit writing respective histograms of Cb values and Cr values with regard to pixels included in an input image frame, a single-tone determination unit comparing respective maximum values of the histograms of Cb values and Cr values with a first threshold value, and determining the input image frame as a single-tone image if at least one of the maximum values is higher than the first threshold value, and an auto white balance gain computation unit computing and an auto white balance gain by using color information of an input image frame and outputting the computed auto white balance gain, wherein if the input image frame is determined to be a single-tone image, the auto white balance gain computation unit outputs an auto white balance gain computed with respect to a previous input image frame.

Abstract translation: 一种用于自动白平衡的装置包括直方图生成单元，其针对包括在输入图像帧中的像素写入相应的Cb值和Cr值的直方图;单色调确定单元，将Cb值和Cr值的直方图的相应最大值进行比较 具有第一阈值，并且如果所述最大值中的至少一个高于所述第一阈值，则将所述输入图像帧确定为单色图像，并且自动白平衡增益计算单元计算和自动白平衡增益由 使用输入图像帧的颜色信息并输出所计算的自动白平衡增益，其中如果输入图像帧被确定为单色图像，则自动白平衡增益计算单元输出相对于 先前的输入图像帧。

公开(公告)号：US07668452B2

公开(公告)日：2010-02-23

申请号：US11808751

申请日：2007-06-12

Applicant: Keun Woo Park ,  Bong Soon Kang ,  Joo Hyun Kim ,  Hyun Sik Kim ,  Kang Joo Kim ,  Tae Eung Kim

Inventor： Keun Woo Park ,  Bong Soon Kang ,  Joo Hyun Kim ,  Hyun Sik Kim ,  Kang Joo Kim ,  Tae Eung Kim

IPC: G03B7/00

CPC classification number: G03B7/093

Abstract: An automatic exposure control apparatus employed by an image sensor module including a lens unit, an image sensing unit having a shutter, and an image signal processing unit, the apparatus including: a brightness calculator extracting average brightness of a image signal; a brightness adjustment determiner determining whether to fix or adjust a speed of the shutter based on the average brightness; an adjustment path controller controlling the speed of the shutter by using the brightness error; a digital filter filtering the brightness error; a shutter speed adjuster adjusting a present shutter speed value by using one of the brightness error and the filtered brightness; and a shutter speed controller controlling a speed of the shutter by using the adjusted shutter speed value.

Abstract translation: 一种由包括透镜单元，具有快门的图像感测单元和图像信号处理单元的图像传感器模块采用的自动曝光控制设备，所述设备包括：亮度计算器，提取图像信号的平均亮度; 亮度调节确定器，基于平均亮度确定是否固定或调节快门的速度; 调节路径控制器，通过使用亮度误差来控制快门的速度; 数字滤波器过滤亮度误差; 快门速度调节器，通过使用亮度误差和滤波亮度之一来调节当前快门速度值; 以及快门速度控制器，通过使用调节的快门速度值来控制快门的速度。

公开(公告)号：US07024034B2

公开(公告)日：2006-04-04

申请号：US10270390

申请日：2002-10-15

Applicant: Young-sun Kim ,  Bong-hwan Cho ,  Bong-soon Kang ,  Doo-Il Hong

Inventor： Young-sun Kim ,  Bong-hwan Cho ,  Bong-soon Kang ,  Doo-Il Hong

IPC: G06K9/00

CPC classification number: H04N9/73 ,  G06T11/001

Abstract: A color temperature conversion system and a method thereof are capable of converting the color temperature to the color temperature almost identical with the color temperature obtained by the Robertson algorithm. The color temperature conversion system has an XYZ conversion unit for converting an RGB signal of input video data into an XYZ value in a CIE coordinate system, a chroma calculating unit for calculating X and Y coordinate values of a pixel corresponding to the converted XYZ value, an offset compensate unit for compensating the X coordinate value calculated by the chroma calculating unit based on an X coordinate value difference and a Y coordinate value difference of a color temperature on a white point line of the CIE coordinate system and an actual color temperature of the video data, in the case the color temperature is calculated based on the calculated X coordinate value, a color temperature calculating unit for calculating the color temperature of the video data that is inputted based on the compensated X coordinate value, and a color temperature conversion unit for converting the color temperature calculated by the color temperature calculating unit into a predetermined color temperature and outputting the converted predetermined color temperature.

公开(公告)号：US07019789B2

公开(公告)日：2006-03-28

申请号：US10086246

申请日：2002-03-04

Applicant: Bong soon Kang ,  Geun-sik Jang

Inventor： Bong soon Kang ,  Geun-sik Jang

IPC: H04N9/73

CPC classification number: H04N9/73 ,  G01J5/60 ,  G06T7/90 ,  G06T2207/10024

Abstract: An apparatus and a method for use in a color display system, for calculating a color temperature. The apparatus for calculating color temperature includes a color temperature selecting portion for selecting a left color temperature and a right color temperature that are most adjacent to a one-dimensional chroma inputted from a mapping table, the mapping table consisting of chroma and color temperature, a distance calculating portion for calculating distance between the selected left color temperature and the inputted one-dimensional chroma, and between the selected right color temperature and the inputted one-dimensional chroma, respectively, and a color temperature calculating portion for calculating a color temperature corresponding to the one-dimensional chroma inputted in accordance with a ratio of the calculated distance. Accordingly, the apparatus and method can be established using little hardware since the color temperature is calculated at a one-dimensional level.

公开(公告)号：US08693777B2

公开(公告)日：2014-04-08

申请号：US13091227

申请日：2011-04-21

Applicant: Joo Young Ha ,  Won Tae Choi ,  Byung Hyun Kim ,  Bong Soon Kang ,  Won Woo Jang ,  Kyung Rin Kim ,  Jung Joo Yang ,  Gi Dong Lee ,  Kang Joo Kim

Inventor： Joo Young Ha ,  Won Tae Choi ,  Byung Hyun Kim ,  Bong Soon Kang ,  Won Woo Jang ,  Kyung Rin Kim ,  Jung Joo Yang ,  Gi Dong Lee ,  Kang Joo Kim

IPC: G06K9/00

CPC classification number: H04N1/4092 ,  G06T7/13 ,  G06T7/143

Abstract: There are provided an apparatus and a method for estimating edge areas of pixels in a digital image to thereby prevent an edge sharpening algorithm from being applied to non-edge area of the digital image. Therefore, the apparatus can accurately determine whether each pixel is in an edge area or in a non-edge area, by generating a binary mask obtained by using a luminance difference average between each pixel and each of neighboring pixels in the digital image. Moreover, the determination of an edge-area or a non-edge area may be applied to various digital images, by adjusting a level of edge-area determination.

Abstract translation: 提供了一种用于估计数字图像中的像素的边缘区域的装置和方法，从而防止边缘锐化算法被应用于数字图像的非边缘区域。 因此，通过生成通过使用数字图像中的每个像素和每个相邻像素之间的亮度差平均而获得的二进制掩码，该装置可以准确地确定每个像素是在边缘区域还是在非边缘区域。 此外，可以通过调整边缘区域确定的水平来将边缘区域或非边缘区域的确定应用于各种数字图像。

公开(公告)号：US20120033885A1

公开(公告)日：2012-02-09

申请号：US13092438

申请日：2011-04-22

Applicant: Joo Young HA ,  Won Tae CHOI ,  Bong Soon KANG ,  Byung Hyun KIM ,  Joo Hyun KIM ,  Sun Mi SIN ,  Won Woo JANG ,  Hak Yong HAN ,  Gi Dong LEE

Inventor： Joo Young HA ,  Won Tae CHOI ,  Bong Soon KANG ,  Byung Hyun KIM ,  Joo Hyun KIM ,  Sun Mi SIN ,  Won Woo JANG ,  Hak Yong HAN ,  Gi Dong LEE

IPC: G06K9/40 ,  G06K9/00

CPC classification number: G06T5/003 ,  G06T7/13 ,  G06T2207/20192

Abstract: There is provided an apparatus for improving the sharpness of an image, which may prevent occurrence of distortion of an image in an edge enhancement process of the image by applying an active weight in accordance with a two-dimensional (2D) high pass filtering value of the image. The apparatus may include: a 2D high pass filter outputting a high frequency element value for the luminance values of pixels of an input image; a weight generating unit generating a weight changed depending on a magnitude of the high frequency element value; a weight applying unit applying the weight to the high frequency element value; and an edge enhancement image generating unit adding, to the luminance values of the pixels of the input image, the high frequency element value to which the weight is applied to thereby output an image of which an edge is enhanced.

Abstract translation: 提供了一种用于提高图像的清晰度的装置，其可以通过根据二维（2D）高通滤波值施加有效权重来防止图像的边缘增强处理中的图像失真的发生 图片。 所述装置可以包括：输出用于输入图像的像素的亮度值的高频元素值的2D高通滤波器; 权重生成单元，生成根据高频元素值的大小而变化的权重; 加权单元，将所述权重应用于所述高频元素值; 以及边缘增强图像生成单元，对输入图像的像素的亮度值加上加权的高频单元值，从而输出边缘增强的图像。

公开(公告)号：US07535514B2

公开(公告)日：2009-05-19

申请号：US11259758

申请日：2005-10-25

Applicant: Deuk-Geun Ahn ,  Bong-Soon Kang ,  Joo-Young Ha ,  Ju-Hyun Kim

Inventor： Deuk-Geun Ahn ,  Bong-Soon Kang ,  Joo-Young Ha ,  Ju-Hyun Kim

IPC: H04N9/66 ,  H04N9/77

CPC classification number: H04N11/186

Abstract: We describe an apparatus and method for decoding a SECAM chrominance signal. The apparatus may include a band-pass filter to separate the chrominance signal from the composite video baseband signal. A down-mixer down mixes the chrominance signal from a high to a low frequency band to generate two signals having a substantially 90° phase difference. A cloche filter filters the two signals. A differentiator differentiates the cloche filtered signals. A multiplier squares each differentiated signal. An adder sums the squared result while a square root takes the square root of the sum.

Abstract translation: 我们描述了一种用于解码SECAM色度信号的装置和方法。 该装置可以包括带通滤波器，以将色度信号与复合视频基带信号分离。 下混频器降低将色度信号从高频带混合到低频带，以产生具有大致90°相位差的两个信号。 cloche滤波器滤除两个信号。 微分器区分了滤波信号。 一个乘法器对每个差分信号进行平方。 加法器对平方结果求和，而平方根取和的平方根。

公开(公告)号：US09092881B2

公开(公告)日：2015-07-28

申请号：US12476516

申请日：2009-06-02

Applicant: Boo Dong Kwak ,  Bong Soon Kang ,  Hyun Soo Kim ,  Won Woo Jang ,  Kyung Rin Kim ,  Won Tae Choi ,  Joo Young Ha

Inventor： Boo Dong Kwak ,  Bong Soon Kang ,  Hyun Soo Kim ,  Won Woo Jang ,  Kyung Rin Kim ,  Won Tae Choi ,  Joo Young Ha

IPC: G06T3/40 ,  G06T7/00 ,  H04N9/04

CPC classification number: G06T3/4015 ,  G06T3/403 ,  G06T2207/10024 ,  G06T2207/20012 ,  G06T2207/20192 ,  H04N9/045 ,  H04N2209/046

Abstract: A color interpolation apparatus includes a threshold value determining unit that calculates a luminance value of each area set based on each pixel of a Bayer pattern image and determines edge determining threshold values, an edge information calculating unit that calculates pixel value variations in multiple directions of the set areas by using pixel values of pixels included in each area and edge information regarding each area by using the multiple directional pixel value variations, an area determining unit that determines an edge type by using the edge determining threshold values and the edge information, and a color interpolation unit that applies a color interpolation filter previously set according to the edge type to a corresponding area according to the edge type. The area determining unit uses green information or interpolated green information of a central pixel depending on whether or not a color of the central pixel is green.

Abstract translation: 颜色插值装置包括阈值确定单元，该阈值确定单元基于拜耳图案图像的每个像素计算每个区域的亮度值并确定边缘确定阈值;边缘信息计算单元，其计算多个方向的像素值变化 通过使用包括在每个区域中的像素的像素值和通过使用多方向像素值变化的关于每个区域的边缘信息来设置区域;区域确定单元，通过使用边缘确定阈值和边缘信息来确定边缘类型，以及 颜色插值单元，其根据边缘类型将根据边缘类型预先设置的颜色插值滤波器应用于相应区域。 区域确定单元使用绿色信息或中心像素的内插绿色信息，这取决于中心像素的颜色是否为绿色。

公开(公告)号：US08606034B2

公开(公告)日：2013-12-10

申请号：US13092438

申请日：2011-04-22

Applicant: Joo Young Ha ,  Won Tae Choi ,  Bong Soon Kang ,  Byung Hyun Kim ,  Joo Hyun Kim ,  Sun Mi Sin ,  Won Woo Jang ,  Hak Yong Han ,  Gi Dong Lee

Inventor： Joo Young Ha ,  Won Tae Choi ,  Bong Soon Kang ,  Byung Hyun Kim ,  Joo Hyun Kim ,  Sun Mi Sin ,  Won Woo Jang ,  Hak Yong Han ,  Gi Dong Lee

IPC: G06K9/40

CPC classification number: G06T5/003 ,  G06T7/13 ,  G06T2207/20192

Abstract: There is provided an apparatus for improving the sharpness of an image, which may prevent occurrence of distortion of an image in an edge enhancement process of the image by applying an active weight in accordance with a two-dimensional (2D) high pass filtering value of the image. The apparatus may include: a 2D high pass filter outputting a high frequency element value for the luminance values of pixels of an input image; a weight generating unit generating a weight changed depending on a magnitude of the high frequency element value; a weight applying unit applying the weight to the high frequency element value; and an edge enhancement image generating unit adding, to the luminance values of the pixels of the input image, the high frequency element value to which the weight is applied to thereby output an image of which an edge is enhanced.

Abstract translation: 提供了一种用于提高图像的清晰度的装置，其可以通过根据二维（2D）高通滤波值施加有效权重来防止图像的边缘增强处理中的图像失真的发生 图片。 所述装置可以包括：输出用于输入图像的像素的亮度值的高频元素值的2D高通滤波器; 权重生成单元，生成根据高频元素值的大小而变化的权重; 加权单元，将所述权重应用于所述高频元素值; 以及边缘增强图像生成单元，对输入图像的像素的亮度值加上加权的高频单元值，从而输出边缘增强的图像。