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：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：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：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：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：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：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：US07969480B2

公开(公告)日：2011-06-28

申请号：US12273962

申请日：2008-11-19

申请人： Gyu Won Kim ,  Won Tae Choi

发明人： Gyu Won Kim ,  Won Tae Choi

IPC分类号： H04N9/73 ,  G06K9/00

CPC分类号： H04N9/735

摘要： There is provided a method of controlling auto white balance that can be appropriately used for a camera of an electric device that uses a wide-angle or a super wide-angle lens. A method of controlling auto white balance according to an aspect of the invention may include: converting a color space of an input image from an RGB color space into a YCbCr color space; dividing the input image into a plurality of divided regions; selecting a predetermined number of divided regions in order determined by mean values of Y of pixels included in the plurality of divided regions; comparing a predetermined threshold value with the number of pixels having values of Cb and Cr within a predetermined Cb-Cr range among the pixels included in the selected divided regions in order to determine a white area; and calculating auto white balance gains by using mean values of Y, mean values of Cb, and mean values of Cr of the pixels included in each of the selected divided regions when the number of pixels within the predetermined Cb-Cr range is greater than the threshold value.

摘要翻译： 提供一种控制自动白平衡的方法，其可以适用于使用广角或超广角镜头的电子设备的照相机。 根据本发明的一个方面的控制自动白平衡的方法可以包括：将输入图像的颜色空间从RGB颜色空间转换成YCbCr颜色空间; 将输入图像分割成多个分割区域; 根据包含在多个分割区域中的像素的Y的平均值确定顺序选择预​​定数量的划分区域; 将预定阈值与包括在所选择的分割区域中的像素之间的预定Cb-Cr范围内的具有Cb和Cr值的像素的数量进行比较以确定白色区域; 以及当所述预定Cb-Cr范围内的像素数量大于所述选定分割区域中的每个所述被划分区域时，使用平均值Y，平均值Cb和包括在每个所选择的分割区域中的像素的平均值，计算自动白平衡增益 阈值。

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：US07565121B2

公开(公告)日：2009-07-21

申请号：US11566587

申请日：2006-12-04

申请人： Joo Yul Ko ,  Hak Sun Kim ,  Won Tae Choi ,  Won Wook So

发明人： Joo Yul Ko ,  Hak Sun Kim ,  Won Tae Choi ,  Won Wook So

IPC分类号： H04B7/08

CPC分类号： H03G5/005 ,  H04N1/00307

摘要： In a clock noise canceling circuit, a coupler extracts a signal from a clock signal. A filter selects a harmonic component of a preset frequency in the extraction signal from the coupler. A phase shifter phase inverts the harmonic component of the preset frequency from the filter. An AGC amplifier amplifies the phase-inverted harmonic component from the phase shifter. Also, a combiner combines the amplified component from the phase shifter with the clock signal to eliminate the harmonic component of the preset frequency from the clock signal. A power detector detects a power level of the harmonic component of the preset frequency in an output signal of the combiner. Additionally, a controller controls gain of the automatic gain control amplifier based on the power level of the harmonic component detected by the power detector, thereby canceling noises.

摘要翻译： 在时钟噪声消除电路中，耦合器从时钟信号中提取信号。 滤波器在来自耦合器的提取信号中选择预设频率的谐波分量。 移相器相位从滤波器反转预设频率的谐波分量。 AGC放大器放大来自移相器的相位反相谐波分量。 此外，组合器将来自移相器的放大组件与时钟信号相结合，以从时钟信号中消除预设频率的谐波分量。 功率检测器在组合器的输出信号中检测预设频率的谐波分量的功率电平。 此外，控制器基于由功率检测器检测到的谐波分量的功率电平来控制自动增益控制放大器的增益，从而消除噪声。