公开(公告)号：US08963949B2

公开(公告)日：2015-02-24

申请号：US12428295

申请日：2009-04-22

申请人： Babak Forutanpour ,  Jingqiang Li

发明人： Babak Forutanpour ,  Jingqiang Li

IPC分类号： G06T5/50 ,  G09G5/00

CPC分类号： G06T5/50 ,  G06T7/136 ,  G06T2207/20216

摘要： A method is disclosed that includes receiving multiple sequential images captured by an image capture device. The method includes selecting a subset of the multiple sequential images that are aligned to each other. The method further includes averaging pixel values from each image in the subset of the multiple sequential images to produce a combined image.

摘要翻译： 公开了一种包括接收由图像捕获装置捕获的多个连续图像的方法。 该方法包括选择彼此对准的多个连续图像的子集。 该方法还包括对多个连续图像的子集中的每个图像的像素值进行平均以产生组合图像。

公开(公告)号：US08596541B2

公开(公告)日：2013-12-03

申请号：US12035644

申请日：2008-02-22

申请人： Chinchuan Andrew Chiu ,  Jingqiang Li ,  Hau Hwang ,  Hsiang-Tsun Li ,  Stephen Horton ,  Xiaoyun Jiang ,  Joseph Cheung

发明人： Chinchuan Andrew Chiu ,  Jingqiang Li ,  Hau Hwang ,  Hsiang-Tsun Li ,  Stephen Horton ,  Xiaoyun Jiang ,  Joseph Cheung

IPC分类号： G06K7/10

CPC分类号： G06K7/14 ,  G06K7/1417 ,  G06K7/1443 ,  G06K7/1447 ,  G07G1/0045

摘要： This disclosure describes barcode scanning techniques for an image capture device. The image capture device may automatically detect a barcode within an image while the image capture device is operating in a non-barcode image capture mode, such a default image capture mode. In one aspect, the detection of the barcode within the image may be based on a combination of identified edges and low intensity regions within the image. The image capture device may configure, based on the detection of the barcode, one or more image capture properties associated with the image capture device to improve a quality at which the images are captured. The image capture device captures the image in accordance with the configured image capture properties. The techniques may effectively provide a universal and integrated front-end for producing improved quality images of barcodes without requiring significant interaction with a user via a complicated user interface.

摘要翻译： 本公开描述了用于图像捕获设备的条形码扫描技术。 当图像捕获装置以非条形码图像捕获模式操作时，图像捕获装置可以自动检测图像内的条形码，这种默认图像拍摄模式。 在一个方面，图像内的条形码的检测可以基于图像内的识别边缘和低强度区域的组合。 图像捕获装置可以基于条形码的检测来配置与图像捕获装置相关联的一个或多个图像拍摄属性，以提高拍摄图像的质量。 图像捕获设备根据配置的图像捕获属性捕获图像。 这些技术可以有效地提供通用和集成的前端，用于产生条形码的改进的质量图像，而不需要通过复杂的用户界面与用户进行显着的交互。

公开(公告)号：US08068148B2

公开(公告)日：2011-11-29

申请号：US11327824

申请日：2006-01-05

申请人： Ying Noyes ,  Jingqiang Li

发明人： Ying Noyes ,  Jingqiang Li

IPC分类号： H04N9/73

CPC分类号： H04N5/243 ,  H04N5/235 ,  H04N5/2357

摘要： The disclosure describes flicker detection and correction techniques to improve the quality of captured imagery, such as video or still images. In particular, this disclosure describes flicker correction techniques that compare different image frames to detect flicker. In some embodiments, the comparisons involves summing intensity values associated with rows within the frames and comparing the row sums to generate a difference signal. Detection and correction of flicker may be performed using a first derivative of the difference signal. The first derivative of the difference signal can be used in variety of ways to detect and correct flicker.

摘要翻译： 本公开描述了闪烁检测和校正技术，以提高捕获的图像的质量，例如视频或静止图像。 具体地，本公开描述了比较不同图像帧以检测闪烁的闪烁校正技术。 在一些实施例中，比较涉及将与帧内的行相关联的强度值求和，并比较行和以产生差分信号。 可以使用差分信号的一阶导数来执行闪烁的检测和校正。 差分信号的一阶导数可以以多种方式用于检测和校正闪烁。

公开(公告)号：US20100271507A1

公开(公告)日：2010-10-28

申请号：US12429970

申请日：2009-04-24

申请人： SZEPO R. HUNG ,  Ruben M. Velarde ,  Jingqiang Li

发明人： SZEPO R. HUNG ,  Ruben M. Velarde ,  Jingqiang Li

IPC分类号： H04N5/76 ,  H04N9/68

CPC分类号： H04N5/2351 ,  H04N5/23219 ,  H04N5/2353

摘要： A system and method of image capture parameter adjustment using face brightness information is disclosed. In a particular embodiment, a method is disclosed that includes determining a luma value based on a brightness variation within a selected portion of an image, where the selected portion of the image corresponds to at least a portion of a face. The method further includes adjusting an image capture parameter at least partially based on the determined luma value.

摘要翻译： 公开了使用面部亮度信息的图像拍摄参数调整的系统和方法。 在特定实施例中，公开了一种方法，其包括基于图像的所选部分内的亮度变化来确定亮度值，其中图像的所选部分对应于面部的至少一部分。 该方法还包括至少部分地基于所确定的亮度值来调整图像拍摄参数。

公开(公告)号：US20090212112A1

公开(公告)日：2009-08-27

申请号：US12035653

申请日：2008-02-22

申请人： Hsiang-Tsun Li ,  Jingqiang Li ,  Hau Hwang ,  Xiaoyun Jiang ,  Joseph Cheung

发明人： Hsiang-Tsun Li ,  Jingqiang Li ,  Hau Hwang ,  Xiaoyun Jiang ,  Joseph Cheung

IPC分类号： G06K7/10

CPC分类号： G06K7/10 ,  G06K7/1443 ,  G06K7/1452

摘要： This disclosure describes techniques for detecting a barcode within an image. An image processor may, for example, process an image to detect regions within the image that may be barcodes. The image processor may identify regions of the image that exhibit a high concentration of edges and a high concentration of pixels with low optical intensity co-instantaneously as potential barcodes. The image processor may identify the regions using a number of morphological operations. The image processor may then determine whether the identified regions are actually barcodes by verifying whether the region have unique barcode features. The barcode detection techniques described in this disclosure may be independent of barcode size, location and orientation within the image. Moreover, the use of morphological operations results in faster and more computationally efficient barcode detection, as well as lower computational complexity.

摘要翻译： 本公开描述了用于检测图像内的条形码的技术。 图像处理器可以例如处理图像以检测图像内可能是条形码的区域。 图像处理器可以识别呈现高浓度边缘的图像区域和具有低光强度的高浓度像素作为潜在条形码。 图像处理器可以使用多个形态操作来识别区域。 然后，图像处理器可以通过验证该区域是否具有独特的条形码特征来确定所识别的区域是否实际上是条形码。 本公开中描述的条形码检测技术可以独立于图像内的条形码尺寸，位置和取向。 此外，使用形态学运算导致更快和更有计算效率的条形码检测，以及较低的计算复杂度。

公开(公告)号：US20070166020A1

公开(公告)日：2007-07-19

申请号：US11534993

申请日：2006-09-25

申请人： Shuxue Quan ,  Chinchuan Andrew Chiu ,  Xiaoyun Jiang ,  Jingqiang Li ,  Ying Xie Noyes ,  Kalin Atanassov

发明人： Shuxue Quan ,  Chinchuan Andrew Chiu ,  Xiaoyun Jiang ,  Jingqiang Li ,  Ying Xie Noyes ,  Kalin Atanassov

IPC分类号： G03B17/00

CPC分类号： H04N5/23248 ,  G06T5/003 ,  G06T5/50 ,  G06T2207/10024 ,  G06T2207/20201 ,  H04N5/2352 ,  H04N5/2353 ,  H04N5/243

摘要： A camera system in normal mode and hand jitter reduction (hjr) mode may comprise generating a first exposure time-gain product by multiplying the normal mode exposure time with the normal mode gain. It may further comprise modifying the normal mode exposure time and gain and multiplying these modified parameters to generate a second exposure time-gain product for a hjr mode that reduces the difference between the first exposure time-gain product and the second exposure time-gain product. To reduce the difference the normal mode frame rate may also be modified. Operation of a camera in normal mode may be in response to a sensed light level being above a threshold. The hjr mode may be selected by the user while the camera is operating. The hjr mode may be used in response to a sensed light level being lower than the threshold.

摘要翻译： 正常模式和手抖动降低（hjr）模式的相机系统可以包括通过将正常模式曝光时间与正常模式增益相乘来产生第一曝光时间增益积。 它还可以包括修改正常模式曝光时间并增益并且乘以这些修改的参数以产生用于hjr模式的第二曝光时间增益乘积，其减小第一曝光时间增益乘积与第二曝光时间增益乘积之间的差 。 为了减小差异，也可以修改正常模式帧速率。 在正常模式下照相机的操作可以响应于感测到的光电平高于阈值。 当相机运行时，用户可以选择hjr模式。 响应于感测到的光水平低于阈值，可以使用hjr模式。

公开(公告)号：US20070147817A1

公开(公告)日：2007-06-28

申请号：US11471056

申请日：2006-06-19

申请人： Jingqiang Li ,  Ying Noyes ,  Chinchuan Chiu

发明人： Jingqiang Li ,  Ying Noyes ,  Chinchuan Chiu

IPC分类号： G03B3/10

CPC分类号： G03B3/10 ,  G02B7/282

摘要： Apparatus are provided, including an autofocus mechanism. The autofocus mechanism includes an autofocus preliminary operation mechanism and an autofocus continuation mechanism. The autofocus preliminary operation mechanism starts an autofocus of a lens assembly on a given target by causing a focus quality determiner to determine the quality of focus of the lens assembly on the given target while the position of the lens unit is in one focus range and causing an adjustment controller to effect a preliminary adjustment of the lens assembly position within the same one focus range. The autofocus continuation mechanism automatically, upon a lack of successful focus by the autofocus preliminary operation mechanism, continues an autofocus of the lens assembly on the given target by causing the adjustment controller to effect a continued adjustment of the lens assembly position from the one focus range to a different focus range while the focus quality determiner continues to determine the quality of the focus.

摘要翻译： 提供了包括自动对焦机构的设备。 自动对焦机构包括自动聚焦预备操作机构和自动对焦延续机构。 自动聚焦预备操作机构通过使焦点质量确定器在透镜单元的位置处于一个对焦范围内来确定透镜组件在给定目标上的焦点质量来启动透镜组件在给定目标上的自动聚焦，并导致 调整控制器，用于在相同的一个聚焦范围内实现对镜头组件位置的初步调整。 自动聚焦延续机构在自动聚焦预备操作机构缺少成功的焦点时自动地通过使调节控制器实现透镜组件位置从一个聚焦范围的持续调节来继续透镜组件在给定目标上的自动聚焦 到不同的对焦范围，而焦点质量确定器继续确定焦点的质量。

公开(公告)号：US08384801B2

公开(公告)日：2013-02-26

申请号：US11831612

申请日：2007-07-31

申请人： Szepo Robert Hung ,  Hsiang-Tsun Li ,  Jingqiang Li

发明人： Szepo Robert Hung ,  Hsiang-Tsun Li ,  Jingqiang Li

IPC分类号： H04N5/235

CPC分类号： G03B7/093 ,  H04N5/2351 ,  H04N5/2353 ,  H04N5/243 ,  H04N2007/145

摘要： A device has a processing unit to implement a set of operations to use both luma and chroma information from a scene of an image to dynamically adjust exposure time and sensor gain. The processing unit collects bright near grey pixels and high chroma pixels in the scene. Based on the collected pixels, brightness of the near grey pixels is increased to a predetermined level without saturation. At the same time, the high chroma pixels are kept away from saturation.

摘要翻译： 一种设备具有处理单元，用于实现一组操作，以使用来自图像场景的亮度和色度信息来动态地调整曝光时间和传感器增益。 处理单元收集场景中明亮的近灰色像素和高色度像素。 基于所收集的像素，近灰色像素的亮度增加到预定的水平而不饱和。 同时，高色度像素远离饱和度。

公开(公告)号：US08154632B2

公开(公告)日：2012-04-10

申请号：US12546473

申请日：2009-08-24

申请人： Patrick R. McKinnon ,  Stephen P. Flosdorf ,  Jingqiang Li

发明人： Patrick R. McKinnon ,  Stephen P. Flosdorf ,  Jingqiang Li

IPC分类号： H04N9/64

CPC分类号： H04N5/3675

摘要： A system and method for detecting defective pixels in a sensor. A plurality of pixel values of the sensor may be detected. The values may include those of a first pixel and each nearest neighboring pixel to the first pixel. A second pixel may have the highest value of the neighboring pixels. A third pixel may have the next highest value of the neighboring pixels. A first function may be performed on the second pixel value, producing a first output value. A second function may be performed on the third pixel value, producing a second output value. If the first pixel value is higher than the first output value, or, if the first pixel value is higher than the second output value and the second pixel value is higher than the second output value, it may be determined that the first pixel is defective.

摘要翻译： 一种用于检测传感器中的缺陷像素的系统和方法。 可以检测传感器的多个像素值。 值可以包括第一像素和与第一像素相邻的每个最近的相邻像素的值。 第二像素可以具有相邻像素的最高值。 第三像素可以具有相邻像素的下一个最高值。 可以对第二像素值执行第一功能，产生第一输出值。 可以对第三像素值执行第二功能，产生第二输出值。 如果第一像素值高于第一输出值，或者如果第一像素值高于第二输出值且第二像素值高于第二输出值，则可以确定第一像素有缺陷 。

公开(公告)号：US08023758B2

公开(公告)日：2011-09-20

申请号：US11835220

申请日：2007-08-07

申请人： Szepo Robert Hung ,  Jingqiang Li ,  Hsiang-Tsun Li ,  Xin Zhong

发明人： Szepo Robert Hung ,  Jingqiang Li ,  Hsiang-Tsun Li ,  Xin Zhong

IPC分类号： G06K9/40

CPC分类号： G06T5/006 ,  G06T3/4007

摘要： A two-dimensional (2D) mesh is applied over a distortion surface to approximate a lens roll-off distortion pattern. The process to apply the 2D mesh distributes a plurality of grid points among the distortion pattern and sub-samples the distortion pattern to derive corrected digital gains at each grid location. Non-grid pixels underlying grid blocks having a grid point at each corner are adjusted based on the approximation of the lens roll-off for the grid points of the grid block. In one example, bilinear interpolation is used. The techniques universally correct lens roll-off distortion irregardless of the distortion pattern shape or type. The technique may also correct for green channel imbalance.

摘要翻译： 将二维（2D）网格施加在失真表面上以近似透镜滚降失真图案。 应用2D网格的过程在失真模式中分配多个网格点，并对失真模式进行子采样，以在每个网格位置导出校正的数字增益。 基于网格块的网格点的镜头滚降的近似来调整在每个角上具有网格点的网格块下方的非网格像素。 在一个示例中，使用双线性插值。 这些技术无损于失真图案的形状或类型，普遍地校正镜头滚降。 该技术也可能纠正绿色通道不平衡。