公开(公告)号：US20100134650A1

公开(公告)日：2010-06-03

申请号：US12437784

申请日：2009-05-08

申请人： Gyu Won KIM ,  Hak Sun Kim ,  Won Tae Choi ,  Kyoung Joong Min ,  Joo Young Ha

发明人： Gyu Won KIM ,  Hak Sun Kim ,  Won Tae Choi ,  Kyoung Joong Min ,  Joo Young Ha

IPC分类号： H04N5/235

CPC分类号： H04N5/2352 ,  H04N5/2351 ,  H04N5/2357 ,  H04N5/243

摘要： An auto-exposure control method includes: creating an exposure table and an analog gain table including an exposure time and an analog gain of an image sensor set according to an index, respectively; calculating an average luminance value of an image frame obtained by the image sensor; checking whether or not the average luminance value is within a pre-set range including a prescribed final target value; if the average luminance value is not within the pre-set range, determining a shift step from indexes which have been applied to a current image frame according to the difference between the average luminance value and the final target value in order to determine indexes of the exposure table and the analog gain table to be applied to a next image frame; and repeatedly performing of reading an exposure time and an analog gain corresponding to the indexes shifted by the shift step determined from the indexes applied to the current image frame, from the exposure table and the analog gain table, applying the same to the image sensor, obtaining a next image frame, and calculating an average luminance value.

摘要翻译： 自动曝光控制方法包括：分别根据索引产生曝光表和包括图像传感器组的曝光时间和模拟增益的曝光表和模拟增益表; 计算由所述图像传感器获得的图像帧的平均亮度值; 检查平均亮度值是否在包括规定的最终目标值的预定范围内; 如果平均亮度值不在预设范围内，则根据平均亮度值和最终目标值之间的差，从已经施加到当前图像帧的索引确定移位步长，以便确定 曝光表和要应用于下一个图像帧的模拟增益表; 并且从曝光表和模拟增益表重复执行读取与从应用于当前图像帧的指标确定的移位步长相对应的索引的曝光时间和模拟增益，将其应用于图像传感器， 获得下一个图像帧，并计算平均亮度值。

公开(公告)号：US08115859B2

公开(公告)日：2012-02-14

申请号：US12437784

申请日：2009-05-08

申请人： Gyu Won Kim ,  Hak Sun Kim ,  Won Tae Choi ,  Kyoung Joong Min ,  Joo Young Ha

发明人： Gyu Won Kim ,  Hak Sun Kim ,  Won Tae Choi ,  Kyoung Joong Min ,  Joo Young Ha

IPC分类号： H04N5/20 ,  H04N5/238 ,  G03B7/00

CPC分类号： H04N5/2352 ,  H04N5/2351 ,  H04N5/2357 ,  H04N5/243

摘要： An auto-exposure control method includes: creating an exposure table and an analog gain table including an exposure time and an analog gain of an image sensor set according to an index, respectively; calculating an average luminance value of an image frame obtained by the image sensor; checking whether or not the average luminance value is within a pre-set range including a prescribed final target value; if the average luminance value is not within the pre-set range, determining a shift step from indexes which have been applied to a current image frame according to the difference between the average luminance value and the final target value in order to determine indexes of the exposure table and the analog gain table to be applied to a next image frame; and repeatedly performing of reading an exposure time and an analog gain corresponding to the indexes shifted by the shift step determined from the indexes applied to the current image frame, from the exposure table and the analog gain table, applying the same to the image sensor, obtaining a next image frame, and calculating an average luminance value.

摘要翻译： 自动曝光控制方法包括：分别根据索引产生曝光表和包括图像传感器组的曝光时间和模拟增益的曝光表和模拟增益表; 计算由所述图像传感器获得的图像帧的平均亮度值; 检查平均亮度值是否在包括规定的最终目标值的预定范围内; 如果平均亮度值不在预设范围内，则根据平均亮度值和最终目标值之间的差，从已经施加到当前图像帧的索引确定移位步长，以便确定 曝光表和要应用于下一个图像帧的模拟增益表; 并且从曝光表和模拟增益表重复执行读取与从应用于当前图像帧的指标确定的移位步长相对应的索引的曝光时间和模拟增益，将其应用于图像传感器， 获得下一个图像帧，并计算平均亮度值。

公开(公告)号：US20110190632A1

公开(公告)日：2011-08-04

申请号：US12753724

申请日：2010-04-02

申请人： Gyu Won KIM ,  Won Tae Choi ,  Kyoung Joong Min

发明人： Gyu Won KIM ,  Won Tae Choi ,  Kyoung Joong Min

IPC分类号： A61B8/14

CPC分类号： A61B8/14

摘要： Disclosed herein is an ultrasonic diagnostic apparatus and ultrasonic image processing method. The ultrasonic diagnostic apparatus includes an ultrasonic transmission unit; An ultrasonic probe emits; An ultrasonic reception unit; An image processing unit; A sound velocity determination unit; and A control unit. Accordingly, there is an advantage in that the actual sound velocity of a reflected wave is estimated, so that high-quality ultrasonic images can be provided, and the time required for the estimation of a sound velocity can be reduced.

摘要翻译： 这里公开了超声波诊断装置和超声波图像处理方法。 超声波诊断装置包括：超声波发送部; 超声波探头发射; 超声波接收单元; 图像处理单元; 音速确定单元; 和A控制单元。 因此，有一个优点是估计反射波的实际声速，从而可以提供高品质的超声波图像，并且可以减少估计声速所需的时间。

公开(公告)号：US20090087092A1

公开(公告)日：2009-04-02

申请号：US12238244

申请日：2008-09-25

申请人： Kyoung Joong Min ,  Hak Sun Kim ,  Won Tae Choi

发明人： Kyoung Joong Min ,  Hak Sun Kim ,  Won Tae Choi

IPC分类号： G06K9/00

CPC分类号： G06T5/40 ,  G06T5/009 ,  G06T2207/20008

摘要： A histogram stretching apparatus and a histogram stretching method are disclosed to enhance image contrast by stretching a histogram of an input image within a range of a preset maximum expansion level and a preset minimum expansion level. The histogram stretching apparatus performs proper stretching suitable for a characteristic of the input image in due consideration of a saturation portion and a distribution range of a histogram of the input image. The histogram stretching apparatus can improve stretching effects by removing the saturated portion of the input image, and can prevent image distortion even for a monochromatic image. The histogram apparatus can improve histogram stretching effects by adjusting entire image levels of an image having a histogram frequency distribution skewed to a dark or bright side before a stretching operation.

摘要翻译： 公开了一种直方图拉伸装置和直方图拉伸方法，以通过在预设的最大膨胀水平和预设的最小膨胀水平的范围内拉伸输入图像的直方图来增强图像对比度。 考虑到输入图像的直方图的饱和部分和分布范围，直方图拉伸装置对输入图像的特性进行适当的拉伸。 直方图拉伸装置可以通过去除输入图像的饱和部分来改善拉伸效果，并且甚至可以防止单色图像的图像失真。 直方图装置可以通过在拉伸操作之前调整具有倾斜到暗或亮侧的直方图频率分布的图像的整个图像水平来改善直方图拉伸效果。

公开(公告)号：US08801616B2

公开(公告)日：2014-08-12

申请号：US12753724

申请日：2010-04-02

申请人： Gyu Won Kim ,  Won Tae Choi ,  Kyoung Joong Min

发明人： Gyu Won Kim ,  Won Tae Choi ,  Kyoung Joong Min

IPC分类号： A61B8/00

CPC分类号： A61B8/14

摘要： Disclosed herein is an ultrasonic diagnostic apparatus and ultrasonic image processing method. The ultrasonic diagnostic apparatus includes an ultrasonic transmission unit; An ultrasonic probe emits; An ultrasonic reception unit; An image processing unit; A sound velocity determination unit; and A control unit. Accordingly, there is an advantage in that the actual sound velocity of a reflected wave is estimated, so that high-quality ultrasonic images can be provided, and the time required for the estimation of a sound velocity can be reduced.

摘要翻译： 这里公开了超声波诊断装置和超声波图像处理方法。 超声波诊断装置包括：超声波发送部; 超声波探头发射; 超声波接收单元; 图像处理单元; 音速确定单元; 和A控制单元。 因此，有一个优点是估计反射波的实际声速，从而可以提供高品质的超声波图像，并且可以减少估计声速所需的时间。

公开(公告)号：US08165419B2

公开(公告)日：2012-04-24

申请号：US12238244

申请日：2008-09-25

申请人： Kyoung Joong Min ,  Hak Sun Kim ,  Won Tae Choi

发明人： Kyoung Joong Min ,  Hak Sun Kim ,  Won Tae Choi

IPC分类号： G06K9/40 ,  G06K9/00 ,  G09G1/14 ,  G09G3/28 ,  G09G5/02 ,  G09G5/00 ,  G09G5/10 ,  G03F3/08 ,  H04N9/64 ,  H04N5/202

CPC分类号： G06T5/40 ,  G06T5/009 ,  G06T2207/20008

摘要： A histogram stretching apparatus and a histogram stretching method are disclosed to enhance image contrast by stretching a histogram of an input image within a range of a preset maximum expansion level and a preset minimum expansion level. The histogram stretching apparatus performs proper stretching suitable for a characteristic of the input image in due consideration of a saturation portion and a distribution range of a histogram of the input image. The histogram stretching apparatus can improve stretching effects by removing the saturated portion of the input image, and can prevent image distortion even for a monochromatic image. The histogram apparatus can improve histogram stretching effects by adjusting entire image levels of an image having a histogram frequency distribution skewed to a dark or bright side before a stretching operation.

摘要翻译： 公开了一种直方图拉伸装置和直方图拉伸方法，以通过在预设的最大膨胀水平和预设的最小膨胀水平的范围内拉伸输入图像的直方图来增强图像对比度。 考虑到输入图像的直方图的饱和部分和分布范围，直方图拉伸装置对输入图像的特性进行适当的拉伸。 直方图拉伸装置可以通过去除输入图像的饱和部分来改善拉伸效果，并且甚至可以防止单色图像的图像失真。 直方图装置可以通过在拉伸操作之前调整具有倾斜到暗或亮侧的直方图频率分布的图像的整个图像水平来改善直方图拉伸效果。

公开(公告)号：US20090046928A1

公开(公告)日：2009-02-19

申请号：US12222660

申请日：2008-08-13

申请人： Boo Dong Kwak ,  Bong Soon Kang ,  Sang Choon Kim ,  Joo Young Ha ,  Kyoung Soo Son ,  Hak Sun Kim ,  Won Tae Choi ,  Joo Hyun Kim

发明人： Boo Dong Kwak ,  Bong Soon Kang ,  Sang Choon Kim ,  Joo Young Ha ,  Kyoung Soo Son ,  Hak Sun Kim ,  Won Tae Choi ,  Joo Hyun Kim

IPC分类号： G06K9/03

CPC分类号： H04N1/608 ,  H04N9/735

摘要： An auto white balance method includes converting a color space of an input image from an RGB color space into the Commission International de I'Eclairage (CIE) L*a*b* color space, determining at least a portion of pixels of the input image, assumed that a reference white color is changed, in a range of a predetermined L*a*b* value as pixels to be used for estimating the reference white color, determining averages of an L* value, an a* value, a b* value of the determined pixels to be used for estimating the reference white color as a reference white color estimation value, and calculating a color gain to move the reference white color estimation value to a target value for a predetermined white balance.

摘要翻译： 自动白平衡方法包括将来自RGB颜色空间的输入图像的颜色空间转换为国际照相机（CIE）L * a * b *颜色空间，确定输入图像的至少一部分像素 假设在作为用于估计参考白色的像素的预定L * a * b *值的范围内改变参考白色，确定L *值，a *值，ab *的平均值， 用于估计参考白色的确定像素的值作为参考白色估计值，以及计算颜色增益以将参考白色颜色估计值移动到预定白平衡的目标值。

公开(公告)号：US20080112639A1

公开(公告)日：2008-05-15

申请号：US11984211

申请日：2007-11-14

申请人： Kyoung Joong Min ,  Won Tae Choi ,  Tae Eung Kim

发明人： Kyoung Joong Min ,  Won Tae Choi ,  Tae Eung Kim

IPC分类号： G06K9/40

CPC分类号： G06T5/002 ,  G06T5/20 ,  G06T7/13 ,  G06T2207/10024 ,  G06T2207/20012 ,  G06T2207/20192 ,  H04N5/357

摘要： A method and apparatus for removing noise in a dark area of an image are provided. An edge magnitude in an N×N window image including a plurality of pixels is calculated. It is determined whether an edge area is present in the window image on the basis of the edge magnitude. A mean value of brightness of the window image is calculated when the edge area is not present. It is determined whether the window image corresponds to a bright area or a dark area on the basis of the mean value. The window image is determined as the bright area when the mean value is higher than a preset brightness reference value, and low-pass filtering is performed on the window image. The window image is determined as the dark area when the mean value does not exceed the reference value, and minimum filtering is performed on the window image.

摘要翻译： 提供了用于去除图像的暗区域中的噪声的方法和装置。 计算包括多个像素的N×N窗口图像中的边缘幅度。 基于边缘大小来确定窗口图像中是否存在边缘区域。 当边缘区域不存在时，计算窗口图像的亮度的平均值。 基于平均值确定窗口图像是对应于亮区域还是暗区域。 当平均值高于预设亮度参考值时，窗口图像被确定为亮区域，并且对窗口图像执行低通滤波。 当平均值不超过参考值时，窗口图像被确定为暗区域，并且对窗口图像执行最小滤波。

公开(公告)号：US08693777B2

公开(公告)日：2014-04-08

申请号：US13091227

申请日：2011-04-21

申请人： 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

发明人： 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分类号： G06K9/00

CPC分类号： H04N1/4092 ,  G06T7/13 ,  G06T7/143

摘要： 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.

摘要翻译： 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：US20100150440A1

公开(公告)日：2010-06-17

申请号：US12476516

申请日：2009-06-02

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

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

IPC分类号： G06K9/40

CPC分类号： G06T3/4015 ,  G06T3/403 ,  G06T2207/10024 ,  G06T2207/20012 ,  G06T2207/20192 ,  H04N9/045 ,  H04N2209/046

摘要： A color interpolation apparatus includes: a threshold value determining unit that calculates a luminance value of each of a plurality of areas set based on each pixel of a bayer pattern image generated by an image sensor, and determines edge determining threshold values used for determining each edge of the set areas; an edge information calculating unit that calculates pixel value variations in multiple directions of horizontal, vertical, diagonal, and central directions of the corresponding set areas by using pixel values of pixels included in each set area, and calculates edge information regarding each set area by using the calculated multi-directional pixel value variations; an area determining unit that determines a type of an edge present in each set area by using the edge determining threshold values deterred by the threshold value determining unit and the edge information calculated by the edge information calculating unit; and a color interpolation unit that applies a color interpolation filter previously set according to the edge types to a corresponding set area according to the edge types determined for each region set by the area determining unit.

摘要翻译： 颜色插值装置包括：阈值确定单元，其基于由图像传感器生成的拜耳图案图像的每个像素计算多个区域中的每个区域的亮度值，并且确定用于确定每个边缘的边缘确定阈值 的区域; 边缘信息计算单元，通过使用包括在每个设置区域中的像素的像素值来计算相应设置区域的水平，垂直，对角线和中心方向的多个方向的像素值变化，并且通过使用 计算出的多方向像素值变化; 区域确定单元，其通过使用由阈值确定单元阻止的边缘确定阈值和由边缘信息计算单元计算的边缘信息来确定存在于每个设置区域中的边缘的类型; 以及颜色插值单元，其根据由区域确定单元设置的每个区域确定的边缘类型，将根据边缘类型预先设置的颜色插值滤波器应用于相应的设置区域。