公开(公告)号：US20110051161A1

公开(公告)日：2011-03-03

申请号：US12941876

申请日：2010-11-08

申请人： Jonathan Yen ,  William C. Kress ,  Robert Poe

发明人： Jonathan Yen ,  William C. Kress ,  Robert Poe

IPC分类号： H04N1/60

CPC分类号： G06T5/40 ,  G06T5/009

摘要： Image tone adjustment systems and methods are disclosed. The system of the present invention includes an input to accept an input image. A curve generator is also disclosed that is used to generate a tone reproduction curve including a contrast stretch of the input image, a white stretch of the input image and a black stretch of the input image. Backlit correction is also applied by the tone adjustment corrector to thereby generate a tone adjusted image.

摘要翻译： 公开了图像色调调节系统和方法。 本发明的系统包括接收输入图像的输入。 还公开了一种曲线发生器，其用于产生包括输入图像的对比度伸展，输入图像的白色拉伸和输入图像的黑色拉伸的色调再现曲线。 背光校正也由色调调整校正器应用，从而产生色调调整图像。

公开(公告)号：US20110044541A1

公开(公告)日：2011-02-24

申请号：US12583624

申请日：2009-08-24

申请人： William C. Kress ,  Jonathan Yen

发明人： William C. Kress ,  Jonathan Yen

IPC分类号： G06K9/00

CPC分类号： G06T7/0002 ,  G06T2207/10004 ,  G06T2207/30168

摘要： The subject application is directed to a system and method for detecting backlit images. Encoded color image data is first received into a computer having a processor and associated data storage. Histogram data is then calculated from the received encoded color image data, and a mid-tone range in normalized histogram data is then detected. A zone of normalized pixel counts within the mid-tone range is then selected. Data representing an entry point and an exit point of the normalized histogram data relative to the selected zone is then generated. A plateau area is detected in the histogram data in the selected zone between the entry point and the exit point. Thereafter, a backlit image detection signal is generated indicating whether a backlit image portion is present in the color image data according to the plateau detection.

摘要翻译： 本申请涉及用于检测背光图像的系统和方法。 编码的彩色图像数据首先被接收到具有处理器和相关联的数据存储器的计算机中。 然后从接收到的编码彩色图像数据计算直方图数据，然后检测归一化直方图数据中的中间色调范围。 然后选择中音范围内的归一化像素计数区域。 然后生成表示归一化直方图数据相对于所选择的区域的入口点和出口点的数据。 在入口点和出口点之间的所选区域的直方图数据中检测到平台区。 此后，产生背光图像检测信号，指示根据平台检测在彩色图像数据中是否存在背光图像部分。

公开(公告)号：US20120033890A1

公开(公告)日：2012-02-09

申请号：US13083286

申请日：2011-04-08

申请人： Jonathan Yen ,  William C. Kress

发明人： Jonathan Yen ,  William C. Kress

IPC分类号： G06K9/46

CPC分类号： H04N1/00005 ,  H04N1/00037 ,  H04N1/00039 ,  H04N1/00047 ,  H04N1/00068 ,  H04N1/00082 ,  H04N1/00925

摘要： Systems and methods for backlit scene detection are described. The method includes performing a pre-test on an electronic image to determine that the electronic image does not include a disqualifying characteristic. Next, the method includes performing a type test on the electronic image to determine an image type of the electronic image from a first set of predetermined backlit image types. Next the method includes performing a post test on the electronic image to determine that the image darkness density does not exceed a predetermined density. Finally, the method includes performing a second post test on the electronic image to determine that the electronic image is one of a second set of predetermined backlit image types or that the edge percentage of the electronic image exceeds a predetermined percentage.

摘要翻译： 描述背光场景检测的系统和方法。 该方法包括对电子图像执行预测试以确定电子图像不包括不合格特征。 接下来，该方法包括对电子图像执行类型测试以从第一组预定背光图像类型确定电子图像的图像类型。 接下来，该方法包括对电子图像进行后验测试以确定图像暗度密度不超过预定密度。 最后，该方法包括对电子图像执行第二次后测试以确定电子图像是第二组预定背光图像类型之一或电子图像的边缘百分比超过预定百分比。

公开(公告)号：US20090220120A1

公开(公告)日：2009-09-03

申请号：US12039225

申请日：2008-02-28

申请人： Jonathan Yen ,  William C. Kress ,  Harold Boll ,  Robert Poe

发明人： Jonathan Yen ,  William C. Kress ,  Harold Boll ,  Robert Poe

IPC分类号： G06K9/00

CPC分类号： G06K9/00664 ,  G06K9/4652 ,  G06T7/90

摘要： The subject application is directed to a system and method for artistic scene image detection. First, image data is received that is encoded in a multi-dimensional color space. From the received image data, histogram data is then calculated. Dominant spike regions in the calculated histogram data are then identified. An N-sum value is then calculated from the identified dominant spike regions in the calculated histogram data. Testing of the calculated N-sum value against a predetermined threshold value then occurs. The received image data is thereafter classified as an artistic scene, a tinted artistic scene, or a sepia tone range artistic scene according to the testing results.

摘要翻译： 本申请涉及用于艺术场景图像检测的系统和方法。 首先，接收以多维颜色空间编码的图像数据。 从接收到的图像数据中，计算直方图数据。 然后确定计算的直方图数据中的主峰值区域。 然后，在所计算的直方图数据中，根据所识别的优势尖峰区域计算N和值。 然后发生对预定阈值的计算的N和值的测试。 根据测试结果，接收到的图像数据此后被分类为艺术场景，有色艺术场景或深褐色调范围艺术场景。

公开(公告)号：US08634649B2

公开(公告)日：2014-01-21

申请号：US13083286

申请日：2011-04-08

申请人： Jonathan Yen ,  William C. Kress

发明人： Jonathan Yen ,  William C. Kress

IPC分类号： G06K9/00 ,  H04N5/74

CPC分类号： H04N1/00005 ,  H04N1/00037 ,  H04N1/00039 ,  H04N1/00047 ,  H04N1/00068 ,  H04N1/00082 ,  H04N1/00925

摘要： Systems and methods for backlit scene detection are described. The method includes performing a pre-test on an electronic image to determine that the electronic image does not include a disqualifying characteristic. Next, the method includes performing a type test on the electronic image to determine an image type of the electronic image from a first set of predetermined backlit image types. Next the method includes performing a post test on the electronic image to determine that the image darkness density does not exceed a predetermined density. Finally, the method includes performing a second post test on the electronic image to determine that the electronic image is one of a second set of predetermined backlit image types or that the edge percentage of the electronic image exceeds a predetermined percentage.

摘要翻译： 描述背光场景检测的系统和方法。 该方法包括对电子图像执行预测试以确定电子图像不包括不合格特征。 接下来，该方法包括对电子图像执行类型测试以从第一组预定背光图像类型确定电子图像的图像类型。 接下来，该方法包括对电子图像进行后验测试以确定图像暗度密度不超过预定密度。 最后，该方法包括对电子图像执行第二次后测试以确定电子图像是第二组预定背光图像类型之一或电子图像的边缘百分比超过预定百分比。

公开(公告)号：US08483508B2

公开(公告)日：2013-07-09

申请号：US12941876

申请日：2010-11-08

申请人： Jonathan Yen ,  William C. Kress ,  Robert Poe

发明人： Jonathan Yen ,  William C. Kress ,  Robert Poe

IPC分类号： G06K9/40 ,  H04N1/60

CPC分类号： G06T5/40 ,  G06T5/009

摘要： Image tone adjustment systems and methods are disclosed. The system of the present invention includes an input to accept an input image. A curve generator is also disclosed that is used to generate a tone reproduction curve including a contrast stretch of the input image, a white stretch of the input image and a black stretch of the input image. Backlit correction is also applied by the tone adjustment corrector to thereby generate a tone adjusted image.

摘要翻译： 公开了图像色调调节系统和方法。 本发明的系统包括接收输入图像的输入。 还公开了一种曲线发生器，其用于产生包括输入图像的对比度伸展，输入图像的白色拉伸和输入图像的黑色拉伸的色调再现曲线。 背光校正也由色调调整校正器应用，从而产生色调调整图像。

公开(公告)号：US20100046832A1

公开(公告)日：2010-02-25

申请号：US12194025

申请日：2008-08-19

申请人： William C. KRESS ,  Jonathan Yen

发明人： William C. KRESS ,  Jonathan Yen

IPC分类号： G06K9/40 ,  G06K9/00

CPC分类号： G06T5/008

摘要： The subject application is directed to backlit image adjustment. First, image data is received that includes an image portion defined by an associated backlit region, from which a tonal curve is then isolated. At least one anchor point on the isolated tonal curve is selected based upon backlighting characteristics in the received image data. A sectional bulging operation is applied on the isolated tonal curve in accordance with the selected anchor point. Adjusted image data is then generated based upon the applied sectional bulging operation, and is then communicated to an associated data storage

摘要翻译： 本申请涉及背光图像调整。 首先，接收包括由关联的背光区域定义的图像部分的图像数据，然后从中分离色调曲线。 基于接收到的图像数据中的背光特性来选择孤立色调曲线上的至少一个锚点。 根据所选择的锚点，将分段凸起操作应用于孤立的色调曲线上。 然后根据应用的分段凸起操作生成调整后的图像数据，然后将其传送到关联的数据存储器

公开(公告)号：US08311327B2

公开(公告)日：2012-11-13

申请号：US12583624

申请日：2009-08-24

申请人： William C. Kress ,  Jonathan Yen

发明人： William C. Kress ,  Jonathan Yen

IPC分类号： G06K9/00 ,  G06K9/34

CPC分类号： G06T7/0002 ,  G06T2207/10004 ,  G06T2207/30168

摘要： The subject application is directed to a system and method for detecting backlit images. Encoded color image data is first received into a computer having a processor and associated data storage. Histogram data is then calculated from the received encoded color image data, and a mid-tone range in normalized histogram data is then detected. A zone of normalized pixel counts within the mid-tone range is then selected. Data representing an entry point and an exit point of the normalized histogram data relative to the selected zone is then generated. A plateau area is detected in the histogram data in the selected zone between the entry point and the exit point. Thereafter, a backlit image detection signal is generated indicating whether a backlit image portion is present in the color image data according to the plateau detection.

摘要翻译： 本申请涉及用于检测背光图像的系统和方法。 编码的彩色图像数据首先被接收到具有处理器和相关联的数据存储器的计算机中。 然后从接收到的编码彩色图像数据计算直方图数据，然后检测归一化直方图数据中的中间色调范围。 然后选择中音范围内的归一化像素计数区域。 然后生成表示归一化直方图数据相对于所选区域的入口点和出口点的数据。 在入口点和出口点之间的所选区域的直方图数据中检测到平台区。 此后，产生背光图像检测信号，指示根据平台检测在彩色图像数据中是否存在背光图像部分。

公开(公告)号：US20120114265A1

公开(公告)日：2012-05-10

申请号：US12940934

申请日：2010-11-05

申请人： Jonathan Yen ,  William C. Kress ,  Bradley S. Winslow

发明人： Jonathan Yen ,  William C. Kress ,  Bradley S. Winslow

IPC分类号： G06K9/40

CPC分类号： H04N1/6027

摘要： Systems and methods for image contrast enhancement are disclosed. A tone reproduction curve function is generated for a plurality of pixel values, each including a brightness value, based on a contrast adjustment value, the brightness value of each of the pixels and a power-law function, the tone reproduction curve taking the form of an S-shaped curve. The S-shaped curve includes a bulging curve portion corresponding to an area wherein a brightness of pixels having values representative of relative brightness is increased, a sagging curve portion corresponding to an area wherein a brightness of pixels having values representative of relative darkness is decreased, and an inflection point serving as a demarcation between the bulging area and the sagging area of the tone reproduction curve. The exponent of the power-law function is generated as a quadratic polynomial function f(x) in a range 0≦f(x)≦1, wherein x is defined as a curvature factor. The tone reproduction curve is then applied to the image data to generate contrast enhanced image data. The enhanced image data is then output to an associated image rendering device.

摘要翻译： 公开了用于图像对比度增强的系统和方法。 针对多个像素值产生色调再现曲线函数，每个像素值包括基于对比度调整值的亮度值，每个像素的亮度值和幂律函数，色调再现曲线采用 一个S形曲线。 S形曲线包括对应于其中具有代表相对亮度的值的像素的亮度增加的区域的凸起曲线部分，对应于具有代表相对暗度的值的像素的亮度减小的区域的下垂曲线部分， 以及作为音调再现曲线的凸起区域和下垂区域之间的分界的拐点。 功率律函数的指数是在范围为0＆nlE; f（x）＆nlE; 1中的二次多项式函数f（x）生成的，其中x被定义为曲率因子。 然后将色调再现曲线应用于图像数据以生成对比度增强的图像数据。 然后将增强的图像数据输出到相关联的图像呈现设备。

公开(公告)号：US08027536B2

公开(公告)日：2011-09-27

申请号：US11851160

申请日：2007-09-06

申请人： Jonathan Yen ,  William C. Kress

发明人： Jonathan Yen ,  William C. Kress

IPC分类号： G06K9/34

CPC分类号： G06K9/00664

摘要： The subject application is directed to a system and method for image fog scene detection. Electronic image data is first received and divided into image regions, with each region consisting of a plurality of pixels. Next, a comparison matrix is generated corresponding to each image region based upon a comparison of minimum intensity values associated with corresponding pixels to a threshold value. An entry of at least one of the comparison matrices is then tested for a preselected value. The received electronic image data is then identified as inclusive of a fog scene based upon the output of the test on the entry of the comparison matrix. Based upon the identification, fog scene detection data representing an identified fog scene is then generated.

摘要翻译： 本申请涉及用于图像雾场景检测的系统和方法。 首先接收电子图像数据并将其划分为图像区域，每个区域由多个像素组成。 接下来，基于与相应像素相关联的最小强度值与阈值的比较，生成对应于每个图像区域的比较矩阵。 然后针对预选值测试至少一个比较矩阵的条目。 然后，基于对比较矩阵的输入的测试的输出，将接收的电子图像数据识别为包含雾景。 基于识别，然后生成表示识别的雾场景的雾景检测数据。