公开(公告)号：WO2010033886A2

公开(公告)日：2010-03-25

申请号：PCT/US2009/057610

申请日：2009-09-21

Applicant: GTECH CORPORATION ,  COURNOYER, Alexis, J.

Inventor： COURNOYER, Alexis, J.

IPC: H04N1/00

CPC classification number: G06K7/10722 ,  H04N1/00681 ,  H04N1/00689 ,  H04N1/00692 ,  H04N1/00694 ,  H04N1/00737 ,  H04N1/00753 ,  H04N1/00769 ,  H04N1/19594 ,  H04N2201/0436

Abstract: A triggering system and process for a form reader is shown using a histogram of the optical scene. The form reader is open on three sides with a camera facing a platen on to which a form is placed. The camera converts the light rays reflected from the platen into a video stream that is sent to a processor. A change in content of a first light intensity level contrasted to the content of a second light intensity level is used to determine when the form enters the scene. Illustratively, the first light intensity level represents black levels and the second light intensity levels represent white levels. A threshold is pre-determined that isolates the first light intensity content, and when the first light intensity content remains constant (after the presence of a form) the form is deemed to be still wherein the system may then read the information on the form.

Abstract translation: 使用光学场景的直方图示出用于表格阅读器的触发系统和处理。 表格阅读器的三面打开，相机面向放置模板的台板。 相机将从压板反射的光线转换为发送到处理器的视频流。 使用与第二光强度等级的内容形成对比的第一光强度等级的内容的变化来确定表格何时进入场景。 说明性地，第一光强度水平代表黑色水平，第二光强度水平代表白色水平。 阈值被预先确定为隔离第一光强度内容，并且当第一光强度内容保持恒定时（在表单存在之后），该表格被认为仍是其中系统可以读取表格上的信息。

公开(公告)号：WO2010123882A1

公开(公告)日：2010-10-28

申请号：PCT/US2010/031730

申请日：2010-04-20

Applicant: GTECH CORPORATION ,  COURNOYER, Alexis, J. ,  METAYER, Frank ,  TORAL, Carlos, Cervantes

Inventor： COURNOYER, Alexis, J. ,  METAYER, Frank ,  TORAL, Carlos, Cervantes

IPC: G06K9/03 ,  G06K9/20 ,  G06K7/10 ,  G06K17/00 ,  A63F3/06

CPC classification number: G06K9/033 ,  G06K9/00449

Abstract: An optical reader of a form is discussed where the form has a stored known boundary or boundaries. When the boundaries in a captured image do not match those of the stored known boundaries, it may be determined that an obstruction exists that will interfere with a correct reading of the form. The boundary may be printed, blank, and may include quiet areas, or combinations thereof in stored known patterns. A captured image of the form is compared to retrieved, stored boundary information and differences are noted. The differences may be thresholded to determine if an obstruction exists. If an obstruction is detected, the operator may be signaled, and the location may be displayed or highlighted. The form may be discarded or obstruction may be cleared and the form may be re-processed.

Abstract translation: 在表格具有存储的已知边界或边界的情况下讨论了一种形式的光学读取器。 当捕获的图像中的边界与存储的已知边界的边界不匹配时，可以确定存在会妨碍表单的正确读取的障碍物。 边界可以打印，空白，并且可以包括安静的区域，或其组合在已知的已知图案中。 将表单的捕获图像与检索到的存储的边界信息进行比较，并记录差异。 可以将差异阈值化以确定是否存在阻塞。 如果检测到障碍物，则可以用信号通知操作员，并且可以显示或突出显示该位置。 表格可能会被丢弃或障碍可能被清除，表单可能被重新处理。

公开(公告)号：WO2010033886A3

公开(公告)日：2010-07-01

申请号：PCT/US2009057610

申请日：2009-09-21

Applicant: GTECH CORP ,  COURNOYER ALEXIS J

Inventor： COURNOYER ALEXIS J

IPC: H04N1/00

CPC classification number: G06K7/10722 ,  H04N1/00681 ,  H04N1/00689 ,  H04N1/00692 ,  H04N1/00694 ,  H04N1/00737 ,  H04N1/00753 ,  H04N1/00769 ,  H04N1/19594 ,  H04N2201/0436

Abstract: A triggering system and process for a form reader is shown using a histogram of the optical scene. The form reader is open on three sides with a camera facing a platen on to which a form is placed. The camera converts the light rays reflected from the platen into a video stream that is sent to a processor. A change in content of a first light intensity level contrasted to the content of a second light intensity level is used to determine when the form enters the scene. Illustratively, the first light intensity level represents black levels and the second light intensity levels represent white levels. A threshold is pre-determined that isolates the first light intensity content, and when the first light intensity content remains constant (after the presence of a form) the form is deemed to be still wherein the system may then read the information on the form.

Abstract translation: 使用光学场景的直方图示出了用于表单读取器的触发系统和过程。 表格阅读器在三面打开，相机面向放置一个表格的压板。 相机将从压板反射的光线转换为发送到处理器的视频流。 使用与第二光强度级别的内容对比的第一光强度级别的内容的变化来确定表格何时进入场景。 说明性地，第一光强度级别表示黑色电平，第二光强度级别表示白色电平。 阈值是预先确定的，其隔离第一光强度内容，并且当第一光强度内容保持恒定时（在存在表格之后），该形式被认为是静止的，其中系统然后可以读取表单上的信息。