公开(公告)号：US07130474B2

公开(公告)日：2006-10-31

申请号：US10259538

申请日：2002-09-27

申请人： Jiebo Luo ,  Gustav Braun ,  Christophe Papin

发明人： Jiebo Luo ,  Gustav Braun ,  Christophe Papin

IPC分类号： G06K9/36

CPC分类号： G06T3/40

摘要： A method for processing a digital color image for display and transmission includes the steps of (a) resizing the image to a lower display resolution to produce a display-sized image, (b) quantizing the display-sized image to a display palette with an error diffusion process to produce an error diffused image, (c) losslessly compressing the error diffused image to produce a compressed image having a particular file size, (d) comparing the file size to a maximum file size and if less than the maximum file size, transmitting the digital image to the display; (e) if the file size is greater than the maximum file size but less than a another predetermined file size, reducing the error diffusion rate by a predetermined amount in order to reduce the file size; and (f) if the file size is greater than the maximum file size and the predetermined file size, simplifying the resized image by reducing image detail to produce a simplified image and repeating the preceding steps on the simplified image.

摘要翻译： 一种用于处理用于显示和传输的数字彩色图像的方法包括以下步骤：（a）将图像的尺寸调整为较低的显示分辨率以产生显示尺寸的图像，（b）将显示尺寸的图像量化到显示调色板，其中 错误扩散过程以产生误差扩散图像，（c）无损地压缩误差扩散图像以产生具有特定文件大小的压缩图像，（d）将文件大小与最大文件大小进行比较，如果小于最大文件大小 将数字图像发送到显示器; （e）如果文件大小大于最大文件大小但小于另一预定文件大小，则将误差扩散速率降低预定量以减小文件大小; 和（f）如果文件大小大于最大文件大小和预定文件大小，则通过减少图像细节来简化调整大小的图像以产生简化图像，并且在简化图像上重复前述步骤。

公开(公告)号：US20060110068A1

公开(公告)日：2006-05-25

申请号：US10993055

申请日：2004-11-19

申请人： Hui Luo ,  Jiebo Luo

发明人： Hui Luo ,  Jiebo Luo

IPC分类号： G06K9/36 ,  G06K9/00

CPC分类号： G06T7/70 ,  G06T7/194 ,  G06T2207/10116 ,  G06T2207/20044 ,  G06T2207/20081 ,  G06T2207/20132 ,  G06T2207/30008

摘要： A method for detecting and correcting the orientation of a radiograph. The method generally includes the steps of accessing the radiograph; locating a region of interest in the radiograph; and using the located region of interest and a classifier to detect the orientation of the radiograph. In a preferred embodiment, the radiograph is preprocessed.

公开(公告)号：US20060110035A1

公开(公告)日：2006-05-25

申请号：US11285560

申请日：2005-11-21

申请人： Hui Luo ,  Jiebo Luo ,  Xiaohui Wang

发明人： Hui Luo ,  Jiebo Luo ,  Xiaohui Wang

IPC分类号： G06K9/00 ,  G06K9/34

CPC分类号： G06T7/0012 ,  G06T7/00 ,  G06T7/194 ,  G06T2207/10116 ,  G06T2207/30004

摘要： A method for classifying radiographs. The method includes the steps of: accessing a radiograph; categorizing the radiograph into pre-determined classes based on gross characteristics of the radiograph, and recognizing the image contents in the radiograph.

摘要翻译： 用于分类放射照片的方法。 该方法包括以下步骤：访问放射照片; 根据放射照片的总体特征将X光照片分类为预先确定的等级，并且识别X光照片中的图像内容。

公开(公告)号：US06952286B2

公开(公告)日：2005-10-04

申请号：US09732503

申请日：2000-12-07

申请人： Jiebo Luo ,  Robert T. Gray

发明人： Jiebo Luo ,  Robert T. Gray

IPC分类号： G06T11/60 ,  G06K9/52 ,  G06K9/62 ,  G06T5/00 ,  G06T7/00 ,  H04N1/40 ,  G06K15/00 ,  H04N1/387 ,  H04N1/407 ,  H04N1/409

CPC分类号： G06K9/00624 ,  G06K9/52 ,  G06K9/6296 ,  G06T7/11 ,  G06T7/194 ,  G06T2207/30201

摘要： A method is disclosed for providing photofinishing services for images having a main subject and background, comprising the steps of producing a digital image of a customer's photographic image; producing a main subject belief map from the digital image; employing the main subject belief map to produce a modified digital image; producing a print of the digital image; producing a print of the modified digital image; and delivering both prints to the customer. The step of employing the main subject belief map to produce a modified digital image includes zoom and crop steps that maintain a main subject within a resulting cropped image. The step of employing the main subject belief map to produce a modified digital image may include a subject emphasizing step. The emphasizing step may include the step of maintaining the main subject in color and the background in black and white, the step of altering the background by reduced brightness to produce a spotlight effect on the main subject, and/or the step of altering the background with reduced sharpness. The step of employing the main subject belief map to produce a modified digital image may include the step of altering pixel values that are a part of the main subject and/or altering pixel values that are a part of the background.

摘要翻译： 公开了一种用于为具有主要主题和背景的图像提供照相洗印服务的方法，包括以下步骤：产生顾客摄影图像的数字图像; 从数字图像产生主要主题信念图; 采用主题信仰图生成修改后的数字图像; 产生数字图像的打印; 产生经修改的数字图像的打印; 并将两张照片交付给客户。 使用主题信仰图来生成修改的数字图像的步骤包括在所得到的裁剪图像内维持主要对象的缩放和裁剪步骤。 使用主题信念图来生成修改的数字图像的步骤可以包括被摄体强调步骤。 强调步骤可以包括将主要被摄体的颜色和背景保持为黑白的步骤，通过降低亮度改变背景以产生对主体的聚光灯效果的步骤和/或改变背景的步骤 锐度降低。 使用主题信仰图来产生修改的数字图像的步骤可以包括改变作为主要对象的一部分的像素值和/或改变作为背景的一部分的像素值的步骤。

公开(公告)号：US20050105776A1

公开(公告)日：2005-05-19

申请号：US10712657

申请日：2003-11-13

申请人： Jiebo Luo ,  Matthew Boutell

发明人： Jiebo Luo ,  Matthew Boutell

IPC分类号： G06F17/30 ,  G06K9/00 ,  G06K9/62 ,  G06K9/68

CPC分类号： G06K9/00664 ,  G06K2209/27

摘要： A method for scene classification of a digital image comprising the steps of: (a) extracting predetermined camera metadata tags from the digital image; (b) obtaining estimates of image class based on the extracted metadata tags; (c) obtaining estimates of image class based on image content; and (d) producing a final estimate of image class based on a combination of metadata-based estimates and image content-based estimates.

摘要翻译： 一种用于数字图像的场景分类的方法，包括以下步骤：（a）从数字图像中提取预定的相机元数据标签; （b）基于所提取的元数据标签获得图像类别的估计; （c）基于图像内容获得图像分类的估计; 以及（d）基于基于元数据的估计和基于图像内容的估计的组合来产生图像类别的最终估计。

公开(公告)号：US20050105775A1

公开(公告)日：2005-05-19

申请号：US10712181

申请日：2003-11-13

申请人： Jiebo Luo ,  Matthew Boutell

发明人： Jiebo Luo ,  Matthew Boutell

IPC分类号： G06F17/30 ,  G06K9/00

CPC分类号： G06K9/6297 ,  G06F17/30247 ,  G06K9/00664

摘要： A method improving scene classification of a sequence of digital images comprising the steps of: (a) providing a sequence of images captured in temporal succession; (b) classifying each of the images individually based on information contained in the image alone to generate a first image classification; and (c) imposing a pre-determined temporal context model on the sequence of images to generate a final image classification for each image in the sequence.

摘要翻译： 一种提高数字图像序列的场景分类的方法，包括以下步骤：（a）提供以时间连续捕获的图像序列; （b）根据包含在图像中的信息单独分类每个图像以产生第一图像分类; 和（c）在图像序列上施加预定时间上下文模型，以生成序列中每个图像的最终图像分类。

公开(公告)号：US06845181B2

公开(公告)日：2005-01-18

申请号：US09904366

申请日：2001-07-12

申请人： Michael W. Dupin ,  Jiebo Luo

发明人： Michael W. Dupin ,  Jiebo Luo

IPC分类号： G06T1/00 ,  H04N1/48 ,  H04N1/60 ,  H04N9/04 ,  G06K9/40

CPC分类号： G06T5/40 ,  G06T5/009 ,  G06T7/136 ,  G06T2207/10024 ,  H04N1/6027 ,  H04N1/628

摘要： A method of processing a digital image, including the steps of applying an initial scene balance algorithm to the digital image to produce an initial scene balanced digital image; detecting skin colored pixels in the initial scene balanced digital image, calculating a brightness adjustment amount based on a statistic of the detected skin colored pixels; and applying the brightness adjustment amount to the scene balanced digital image to produce a processed digital image having improved overall brightness.

摘要翻译： 一种处理数字图像的方法，包括以下步骤：将初始场景平衡算法应用于数字图像以产生初始场景平衡数字图像; 检测初始场景平衡数字图像中的肤色像素，基于检测到的肤色像素的统计量计算亮度调节量; 以及将亮度调整量应用于场景平衡数字图像，以产生具有改善的整体亮度的经处理的数字图像。

公开(公告)号：US06823089B1

公开(公告)日：2004-11-23

申请号：US09672658

申请日：2000-09-28

申请人： Qing Yu ,  Jiebo Luo

发明人： Qing Yu ,  Jiebo Luo

IPC分类号： G06K940

CPC分类号： G06T5/10 ,  G06T5/002 ,  G06T5/003 ,  G06T2207/20056 ,  H04N19/60 ,  H04N19/86 ,  H04N19/865

摘要： A digital image processing determining the extent of blocking and contouring artifacts in a digital image includes the steps of: determining the extent of blocking artifacts using the column and row difference arrays; determining the extent of contouring artifacts based on an estimated DC quantization step size; and, determining a composite artifact measure as a function of the extent of blocking artifacts and extent of contouring artifacts. A digital image processing method determining the extent of contouring artifacts in the digital image includes the steps of: forming a column difference image; averaging the values in the columns in the column difference image to produce a column difference array; computing the average of the values in the column difference array that are separated by one block width to produce a block averaged column difference array; locating the peak value in the block averaged column difference array; repeating the above mentioned steps in the row direction; locating block boundaries based on the locations of peak values of column and row difference arrays; calculating DC value for each block; generating a histogram of the block DC values; calculating the Fourier transform of the histogram; locating the first non-DC peak in the Fourier transform domain; calculating a DC quantization step size based on the frequency of the first non-DC peak; and, employing the DC quantization step size as a measure of the extent of the contouring artifacts in the digital image.

摘要翻译： 确定数字图像中的阻塞和轮廓伪迹的程度的数字图像处理包括以下步骤：使用列和行差分阵列确定块伪影的程度; 基于估计的DC量化步长确定轮廓伪迹的程度; 以及确定作为块伪影程度和轮廓伪像程度的函数的复合伪像度量。 确定数字图像中的轮廓伪迹的程度的数字图像处理方法包括以下步骤：形成列差分图像; 对列差分图像中的列进行平均，以产生列差数组; 计算列差分阵列中由一个块宽度分隔的值的平均值，以产生块平均列差分阵列; 将峰值定位在块平均列差数组中; 在行方向重复上述步骤; 基于列和行差分阵列的峰值位置定位块边界; 计算每个块的DC值; 产生块DC值的直方图; 计算直方图的傅里叶变换; 将傅立叶变换域中的第一非DC峰定位; 基于所述第一非DC峰值的频率计算DC量化步长; 并且使用DC量化步长作为数字图像中的轮廓伪像的程度的度量。

公开(公告)号：US06718068B1

公开(公告)日：2004-04-06

申请号：US09522742

申请日：2000-03-10

申请人： Edward B. Gindele ,  Jiebo Luo

发明人： Edward B. Gindele ,  Jiebo Luo

IPC分类号： G06R940

CPC分类号： G06T5/002 ,  G06T5/20

摘要： A method of processing a digital image channel to remove noise, includes the steps of: identifying a pixel of interest; identifying at least two sampled local regions of pixels which include the pixel of interest; calculating a noise free pixel estimate for each sampled local region of pixels; calculating a statistical weighting factor for each sampled local region, the calculation of the statistical weighting factor being independent of the calculation of the noise free pixel estimate; and using the noise free pixel estimates and the statistical weighting factors for calculate a noise reduced pixel value.

摘要翻译： 一种处理数字图像通道以消除噪声的方法包括以下步骤：识别感兴趣的像素; 识别包括感兴趣像素的至少两个采样的像素局部区域; 为每个采样的像素局部区域计算无噪声像素估计; 计算每个采样的局部区域的统计加权因子，统计加权因子的计算与无噪声像素估计的计算无关; 并使用无噪声像素估计和统计加权因子来计算噪声降低的像素值。

公开(公告)号：US06697502B2

公开(公告)日：2004-02-24

申请号：US09737026

申请日：2000-12-14

申请人： Jiebo Luo

发明人： Jiebo Luo

IPC分类号： G06K900

CPC分类号： G06T7/40 ,  G06K9/00228 ,  G06K9/00362 ,  G06K9/6296 ,  G06T7/11 ,  G06T2207/10024 ,  G06T2207/30201

摘要： A digital image processing method for detecting human figures in a digital color image, comprising the steps of: providing a digital color image having pixels representing RGB values; segmenting the image into non-overlapping regions of homogeneous color or texture; detecting candidate regions of human skin color; detecting candidate regions of human faces; and for each candidate face region, constructing a human figure by grouping regions in the vicinity of the face region according to a pre-defined graphical model of the human figure, giving priority to human skin color regions.

摘要翻译： 一种用于检测数字彩色图像中的人物的数字图像处理方法，包括以下步骤：提供具有代表RGB值的像素的数字彩色图像; 将图像分割成均匀颜色或纹理的非重叠区域; 检测人肤肤色的候选区域; 检测人脸候选区域; 并且对于每个候选面部区域，通过根据人物的预定义图形模型对面部区域附近的区域进行分组来构建人物图像，优先考虑人类皮肤颜色区域。