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1. 发明授权

US08917238B2 Eye-typing term recognition 有权
标题翻译：眼科术语识别
公开(公告)号：US08917238B2
公开(公告)日：2014-12-23
申请号：US13536778
申请日：2012-06-28
申请人： David Nister , Vaibhav Thukral , Djordje Nijemcevic , Ruchi Bhargava
发明人： David Nister , Vaibhav Thukral , Djordje Nijemcevic , Ruchi Bhargava
IPC分类号： G06F3/033
CPC分类号： G06F3/013 , G06F3/0233 , G06F3/0236 , G06F3/0237
摘要： Various embodiments related to entering text into a computing device via eye-typing are disclosed. For example, one embodiment provides a method that includes receiving a data set including a plurality of gaze samples, each gaze sample including a gaze location and a corresponding point in time. The method further comprises processing the plurality of gaze samples to determine one or more likely terms represented by the data set.
摘要翻译：公开了通过眼睛分类将文本输入到计算设备中的各种实施例。例如，一个实施例提供了一种方法，其包括接收包括多个凝视样本的数据集，每个注视样本包括凝视位置和对应的时间点。该方法还包括处理多个凝视样本以确定由该数据集表示的一个或多个可能术语。

2. 发明授权

US08571270B2 Segmentation of a word bitmap into individual characters or glyphs during an OCR process 有权
标题翻译：在OCR过程中将单词位图分割成单个字符或字形
公开(公告)号：US08571270B2
公开(公告)日：2013-10-29
申请号：US12776576
申请日：2010-05-10
申请人： Djordje Nijemcevic
发明人： Djordje Nijemcevic
IPC分类号： G06K9/34
CPC分类号： G06K9/342 , G06K2209/01
摘要： An image processing apparatus is provided that includes a character chopper component that segments words into individual characters in a bitmap of a textual image undergoing an OCR process. The Character chopper component is configured to produce a set of (possibly curved) chop-lines which divide a bitmap of any given word into its individual character or glyph candidates. Cases where an input bitmap contains two separate words are handled by marking a place where those words should be split. The character segmentation algorithm computes the set of vertically oriented, curved chop-lines by considering glyph and background colors in a given word bitmap. The set is filtered afterwards using various heuristics, in order to preserve those lines that indeed do separate a word's glyphs and minimize the number of those that do not.
摘要翻译：提供了一种图像处理装置，其包括将文字分割成经历OCR处理的文本图像的位图中的单个字符的字符斩波器部件。字符斩波器组件被配置为产生一组（可能是弯曲的）斩波线，其将任何给定字的位图划分成其单独的字符或字形候选。输入位图包含两个单独的单词的情况通过标记应分割这些单词的地方来处理。字符分割算法通过考虑给定字位图中的字形和背景颜色来计算垂直取向的弯曲chop线的集合。该集合之后使用各种启发式方法进行过滤，以便保留那些确实分离单词的字形并最小化那些不符号的字符串的行。

3. 发明授权

US08526732B2 Text enhancement of a textual image undergoing optical character recognition 有权
标题翻译：正在进行光学字符识别的文字图像的文本增强
公开(公告)号：US08526732B2
公开(公告)日：2013-09-03
申请号：US12720732
申请日：2010-03-10
申请人： Sasa Galic , Djordje Nijemcevic , Bodin Dresevic
发明人： Sasa Galic , Djordje Nijemcevic , Bodin Dresevic
IPC分类号： G06K9/00
CPC分类号： G06K9/4638 , G06K9/38 , G06K2209/01 , G06K2209/015
摘要： A method for enhancing a textual image for undergoing optical character recognition begins by receiving an image that includes native lines of text. A background line profile is determined which represents an average background intensity along the native lines in the image. Likewise, a foreground line profile is determined which represents an average foreground background intensity along the native lines in the image. The pixels in the image are assigned to either a background or foreground portion of the image based at least in part on the background line profile and the foreground line profile. The intensity of the pixels designated to the background portion of the image is adjusted to a maximum brightness so as to represent a portion of the image that does not include text.
摘要翻译：用于增强用于进行光学字符识别的文本图像的方法通过接收包括原生文本行的图像开始。确定背景线轮廓，其表示沿着图像中的原生线的平均背景强度。同样，确定前景线轮廓，其表示沿着图像中的本机线的平均前景背景强度。至少部分地基于背景线轮廓和前景线轮廓，将图像中的像素分配给图像的背景或前景部分。将指定给图像的背景部分的像素的强度调整到最大亮度，以便表示不包括文本的图像的一部分。

4. 发明申请

US20110069180A1 CAMERA-BASED SCANNING 有权
标题翻译：摄像机扫描
公开(公告)号：US20110069180A1
公开(公告)日：2011-03-24
申请号：US12578445
申请日：2009-10-13
申请人： Djordje Nijemcevic , Magdalena Vukosavljevic , Milan Vugdelija , Ana Mitrovic , Georg F. Petschnigg , Bodin Dresevic
发明人： Djordje Nijemcevic , Magdalena Vukosavljevic , Milan Vugdelija , Ana Mitrovic , Georg F. Petschnigg , Bodin Dresevic
IPC分类号： H04N5/225 , H04N5/262
CPC分类号： H04N5/23293 , G06K9/3216 , H04N1/00251 , H04N1/00307
摘要： Embodiments of camera-based scanning are described. In various embodiments, scanned documents can be created using images captured by a camera associated with a device. An image captured by the camera is processed to identify portions within the image that correspond to rectangular objects such as paper, business cards, whiteboards, screens, and so forth. One or more of these portions can be selected for scanning automatically based on a scoring scheme and/or semi-automatically with the aid of input from a user. One or more scanned documents are created from the selected portions by un-warping the selected portions to remove effects of perspective (e.g., rectify the portions to rectangles) and applying various image enhancements to improve appearance.
摘要翻译：描述基于相机的扫描的实施例。在各种实施例中，可以使用与设备相关联的摄像机捕获的图像来创建扫描的文档。处理由相机拍摄的图像以识别图像中对应于矩形对象（例如纸张，名片，白板，屏幕等）的部分。可以选择这些部分中的一个或多个，以便借助于来自用户的输入，基于评分方案和/或半自动地自动扫描。通过使所选择的部分变形来去除所选部分中的一个或多个扫描文档，以去除透视效果（例如，将部分整理为矩形）并应用各种图像增强以改善外观。

5. 发明申请

US20150193920A1 MAPPING GLINTS TO LIGHT SOURCES 有权
标题翻译：将光线映射到光源
公开(公告)号：US20150193920A1
公开(公告)日：2015-07-09
申请号：US14149577
申请日：2014-01-07
申请人： Derek Knee , John Eldridge , Robert Havlik , Ronald Boskovic , Christopher Mei , Gerhard Schneider , Djordje Nijemcevic , David Nister
发明人： Derek Knee , John Eldridge , Robert Havlik , Ronald Boskovic , Christopher Mei , Gerhard Schneider , Djordje Nijemcevic , David Nister
IPC分类号： G06T7/00 , G06K9/62 , G06T5/50 , H04N5/243
CPC分类号： G06K9/6215 , A61B3/113 , G06F3/013 , G06K9/00604 , G06K9/2027 , G06T7/73 , G06T2207/10016 , G06T2207/10152 , G06T2207/20224 , H04N5/23229 , H04N5/2354 , H04N5/243
摘要： The technology disclosed herein provides various embodiments for mapping glints that reflect off from an object to light sources responsible for the glints. Embodiments disclosed herein are able to correctly map glints to light sources by capturing just a few images with a camera. Each image is captured while illuminating the object with a different pattern of light sources. A glint free image may also be determined. A glint free image is one in which the glints have been removed by image processing techniques.
摘要翻译：本文公开的技术提供了用于将从物体反射的闪烁物映射到负责闪烁的光源的各种实施例。本文公开的实施例能够通过用相机捕获几个图像来将闪烁正确地映射到光源。在用不同的光源模式照亮物体时捕获每个图像。也可以确定无闪光图像。无闪烁的图像是通过图像处理技术去除闪光的图像。

6. 发明授权

US08311331B2 Resolution adjustment of an image that includes text undergoing an OCR process 有权
标题翻译：包含正在进行OCR过程的文本的图像的分辨率调整
公开(公告)号：US08311331B2
公开(公告)日：2012-11-13
申请号：US12719894
申请日：2010-03-09
申请人： Djordje Nijemcevic , Milan Vugdelija , Bodin Dresevic
发明人： Djordje Nijemcevic , Milan Vugdelija , Bodin Dresevic
IPC分类号： G06K9/34
CPC分类号： G06K9/3283 , G06K9/00463 , G06K2209/01
摘要： An optical character recognition process characterizes text lines in a textual image by their base-line, mean-line and x-height. The base-line for at least one text line in the image is determined by finding a parametric curve that maximizes a first fitness function that depends on the values of pixels through which the parametric curve passes and pixels below the parametric curve. The base-line corresponds to the parametric curve for which the first fitness function is maximized. The first fitness function is designed so that it increases with increasing lightless or brightness of pixels immediately below the parametric curve while also increasing with decreasing lightness of pixels through which the parametric curve passes. The mean-line is determined by incrementally shifting the base-line upward by predetermined amounts (e.g., a single pixel) until a second fitness function for the shifted base-line is maximized. The second fitness function is essentially the inverse of the first fitness function. Specifically, the second fitness function increases with increasing lightless of pixels immediately above the shifted base-line while also increasing with decreasing lightness of pixels through which the shifted base-line passes. The x-height is equal to the sum of the predetermined amounts by which the base-line is shifted upward in order to maximize the second fitness function. In some cases different groups of text-lines in the textual image may be characterized differently from one another. For example, each group may be characterized by a most probable x-height for that group.
摘要翻译：光学字符识别过程通过其基线，平均线和x高度来表征文本图像中的文本行。通过找到最大化第一适应度函数的参数曲线来确定图像中至少一条文本行的基线，该参数曲线取决于参数曲线通过的像素的值和参数曲线下方的像素。基线对应于第一适应度函数最大化的参数曲线。第一适应度功能被设计成随着参数曲线正下方的像素的无光或亮度的增加而增加，同时随着参数曲线通过的像素的亮度的减小而增加。通过将基线向上逐渐地移动预定量（例如，单个像素）直到用于移位的基线的第二适应度函数最大化来确定平均线。第二适应度函数本质上是第一适应度函数的倒数。具体地，第二适应度函数随着位于移动基线上方的像素的无光增加而增加，同时随着偏移的基线通过的像素的亮度的减小而增加。 x高度等于基线向上移位的预定量的总和，以便使第二适应度函数最大化。在某些情况下，文本图像中不同的文本行组可能具有彼此不同的特征。例如，每个组的特征可以是该组的最可能的x-高度。

7. 发明申请

US20110268360A1 WORD RECOGNITION OF TEXT UNDERGOING AN OCR PROCESS 有权
标题翻译： WORD承认OCR过程的文字
公开(公告)号：US20110268360A1
公开(公告)日：2011-11-03
申请号：US12772376
申请日：2010-05-03
申请人： Aleksandar Antonijevic , Ivan Mitic , Mircea Cimpoi , Djordje Nijemcevic
发明人： Aleksandar Antonijevic , Ivan Mitic , Mircea Cimpoi , Djordje Nijemcevic
IPC分类号： G06K9/34
CPC分类号： G06K9/344 , G06K2209/01
摘要： A method for identifying words in a textual image undergoing optical character recognition includes receiving a bitmap of an input image which includes textual lines that have been segmented by a plurality of chop lines. The chop lines are each associated with a confidence level reflecting a degree to which the respective chop line properly segments the textual line into individual characters. One or more words are identified in one of the textual lines based at least in part on the textual lines and a first subset of the plurality of chop lines which have a chop line confidence level above a first threshold value. If the first word is not associated with a sufficiently high word confidence level, at least a second word in the textual line is identified based at least in part on a second subset of the plurality of chop lines which have a confidence level above a second threshold value lower than the first threshold value.
摘要翻译：用于识别进行光学字符识别的文本图像中的单词的方法包括：接收包括已经被多个chop行划分的文本行的输入图像的位图。斩线各自与置信水平相关联，该置信度反映了各剁行将文本行适当地分割成单个字符的程度。至少部分地基于文本行和多条斩波线的第一子集具有高于第一阈值的斩线置信水平，在一条文本行中识别一个或多个字。如果第一个字没有与足够高的字词置信水平相关联，则文本行中的至少第二个字词至少部分地基于具有高于第二阈值的置信水平的多个chop行的第二子集来识别值低于第一阈值。

8. 发明申请

US20110222772A1 RESOLUTION ADJUSTMENT OF AN IMAGE THAT INCLUDES TEXT UNDERGOING AN OCR PROCESS 有权
标题翻译：分辨率调整包含OCR过程文本的图像
公开(公告)号：US20110222772A1
公开(公告)日：2011-09-15
申请号：US12719894
申请日：2010-03-09
申请人： Djordje Nijemcevic , Milan Vugdelija , Bodin Dresevic
发明人： Djordje Nijemcevic , Milan Vugdelija , Bodin Dresevic
IPC分类号： G06K9/18
CPC分类号： G06K9/3283 , G06K9/00463 , G06K2209/01
摘要： An optical character recognition process characterizes text lines in a textual image by their base-line, mean-line and x-height. The base-line for at least one text line in the image is determined by finding a parametric curve that maximizes a first fitness function that depends on the values of pixels through which the parametric curve passes and pixels below the parametric curve. The base-line corresponds to the parametric curve for which the first fitness function is maximized. The first fitness function is designed so that it increases with increasing lightless or brightness of pixels immediately below the parametric curve while also increasing with decreasing lightness of pixels through which the parametric curve passes. The mean-line is determined by incrementally shifting the base-line upward by predetermined amounts (e.g., a single pixel) until a second fitness function for the shifted base-line is maximized. The second fitness function is essentially the inverse of the first fitness function. Specifically, the second fitness function increases with increasing lightless of pixels immediately above the shifted base-line while also increasing with decreasing lightness of pixels through which the shifted base-line passes. The x-height is equal to the sum of the predetermined amounts by which the base-line is shifted upward in order to maximize the second fitness function. In some cases different groups of text-lines in the textual image may be characterized differently from one another. For example, each group may be characterized by a most probable x-height for that group.
摘要翻译：光学字符识别过程通过其基线，平均线和x高度来表征文本图像中的文本行。通过找到最大化第一适应度函数的参数曲线来确定图像中至少一条文本行的基线，该参数曲线取决于参数曲线通过的像素的值和参数曲线下方的像素。基线对应于第一适应度函数最大化的参数曲线。第一适应度功能被设计成随着参数曲线正下方的像素的无光或亮度的增加而增加，同时随着参数曲线通过的像素的亮度的减小而增加。通过将基线向上逐渐地移动预定量（例如，单个像素）直到用于移位的基线的第二适应度函数最大化来确定平均线。第二适应度函数本质上是第一适应度函数的倒数。具体地，第二适应度函数随着位于移动基线上方的像素的无光增加而增加，同时随着偏移的基线通过的像素的亮度的减小而增加。 x高度等于基线向上移位的预定量的总和，以便使第二适应度函数最大化。在某些情况下，文本图像中不同的文本行组可能具有彼此不同的特征。例如，每个组的特征可以是该组的最可能的x-高度。

9. 发明申请

US20160026847A1 PUPIL DETECTION 有权
公开(公告)号：US20160026847A1
公开(公告)日：2016-01-28
申请号：US14340279
申请日：2014-07-24
申请人： Milan Vugdelija , Djordje Nijemcevic , David Zachris Nister , Christopher Maurice Mei , Chandra Sekhar Gatla
发明人： Milan Vugdelija , Djordje Nijemcevic , David Zachris Nister , Christopher Maurice Mei , Chandra Sekhar Gatla
IPC分类号： G06K9/00 , G06T7/40 , G06K9/62 , G06T7/00
CPC分类号： G06K9/0061 , G06K9/00604 , G06K9/4604 , G06K9/4652 , G06K9/6218 , G06T7/73 , G06T7/90 , G06T2207/10024 , G06T2207/30201
摘要： Embodiments that relate to determining an estimated pupil region of an eye are disclosed. In one embodiment a method includes receiving an image of an eye, with the image comprising a plurality of pixels. A rough pupil region is generated using at least a subset of the plurality of pixels. A plurality of pupil boundary point candidates are extracted from the rough pupil region, with each of the candidates weighted based on color values of at least two neighbor pixels. A parametric curve may be fitted to the weighted pupil boundary point candidates to determine the estimated pupil region of the eye of the user.

10. 发明授权

US08345106B2 Camera-based scanning 有权
标题翻译：基于相机的扫描
公开(公告)号：US08345106B2
公开(公告)日：2013-01-01
申请号：US12578445
申请日：2009-10-13
申请人： Djordje Nijemcevic , Magdalena Vukosavljevic , Milan Vugdelija , Ana Mitrovic , Georg F. Petschnigg , Bodin Dresevic
发明人： Djordje Nijemcevic , Magdalena Vukosavljevic , Milan Vugdelija , Ana Mitrovic , Georg F. Petschnigg , Bodin Dresevic
IPC分类号： H04N5/225 , H04N5/228 , H04N5/222 , G06K9/20
CPC分类号： H04N5/23293 , G06K9/3216 , H04N1/00251 , H04N1/00307
摘要： Embodiments of camera-based scanning are described. In various embodiments, scanned documents can be created using images captured by a camera associated with a device. An image captured by the camera is processed to identify portions within the image that correspond to rectangular objects such as paper, business cards, whiteboards, screens, and so forth. One or more of these portions can be selected for scanning automatically based on a scoring scheme and/or semi-automatically with the aid of input from a user. One or more scanned documents are created from the selected portions by un-warping the selected portions to remove effects of perspective (e.g., rectify the portions to rectangles) and applying various image enhancements to improve appearance.
摘要翻译：描述基于相机的扫描的实施例。在各种实施例中，可以使用与设备相关联的摄像机捕获的图像来创建扫描的文档。处理由相机拍摄的图像以识别图像中对应于矩形对象（例如纸张，名片，白板，屏幕等）的部分。可以选择这些部分中的一个或多个，以便借助于来自用户的输入，基于评分方案和/或半自动地自动扫描。通过使所选择的部分变形来去除所选部分中的一个或多个扫描文档，以去除透视效果（例如，将部分整理为矩形）并应用各种图像增强以改善外观。

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