公开(公告)号：US20150279222A1

公开(公告)日：2015-10-01

申请号：US14230949

申请日：2014-03-31

Applicant: KONICA MINOLTA LABORATORY U.S.A., INC.

Inventor： Yibin TIAN ,  Wei MING

IPC: G09B5/00 ,  G09B7/02

CPC classification number: G09B5/00 ,  G09B7/02

Abstract: A method, computer program product, and a system for enhancing an interaction between a teacher and a student are disclosed, the method includes receiving video images of a region of interest from a plurality of multi-functional devices; comparing the video images of the region of interest received from the plurality of multi-functional devices; detecting differences in the region of interest of at least one multi-functional device in comparison to the region of interest of the plurality of multi-functional devices; and providing a signal to the at least one multi-functional device based on the detected difference in the region of interest.

Abstract translation: 公开了一种用于增强教师和学生之间的交互的方法，计算机程序产品和系统，所述方法包括从多个多功能设备接收感兴趣区域的视频图像; 比较从多个多功能设备接收的感兴趣区域的视频图像; 与多个多功能设备的感兴趣区域相比，检测至少一个多功能设备的感兴趣区域的差异; 以及基于所感测的区域中检测到的差异向所述至少一个多功能设备提供信号。

公开(公告)号：US20150086112A1

公开(公告)日：2015-03-26

申请号：US14035855

申请日：2013-09-24

Applicant: Konica Minolta Laboratory U.S.A., Inc.

Inventor： Yibin TIAN

IPC: G06T7/00 ,  G06K9/00

CPC classification number: G06T7/0081 ,  G06K9/34 ,  G06K9/38 ,  G06T5/005 ,  G06T7/11 ,  G06T7/194

Abstract: A method for separating foreground and background contents in a document image is provided. The method first computes a pixel-wise map of maximal local features (e.g., local variance, local contrast, etc.), which is binarized to generate a mask for potential foreground. In order to utilize color information effectively, the local feature map is computed using all color channels of the image. Then the background image is obtained by inpainting the mask regions from the non-mask regions of the original document image. Adaptive thresholding is applied to the difference between the original document image and the background image to obtain the binary foreground image. Post-processing of the binary foreground image can further remove undesirable elements. Finally, a more accurate background image can be obtained by inpainting the original document image using the binary foreground image as a mask.

Abstract translation: 提供了一种用于分离文档图像中的前景和背景内容的方法。 该方法首先计算最大局部特征（例如，局部方差，局部对比度等）的像素方向图，其被二值化以产生潜在前景的掩码。 为了有效地利用颜色信息，使用图像的所有颜色通道来计算局部特征图。 然后通过从原始文档图像的非掩模区域中对掩模区域进行印刷而获得背景图像。 自适应阈值处理应用于原始文档图像和背景图像之间的差异，以获得二进制前景图像。 二进制前景图像的后处理可以进一步消除不期望的元素。 最后，使用二进制前景图像作为掩码，可以获得更准确的背景图像。

公开(公告)号：US20150069140A1

公开(公告)日：2015-03-12

申请号：US14539946

申请日：2014-11-12

Applicant: Konica Minolta Laboratory U.S.A., Inc.

Inventor： Wei MING ,  Yibin TIAN

IPC: G06K1/12 ,  G06K19/06

CPC classification number: G06K1/123 ,  G06K7/10712 ,  G06K19/06037 ,  G06K19/0614 ,  G06K2019/06225

Abstract: A method for encoding and decoding color barcodes to increase their data capacity. The encoding steps include determining a shape, a foreground color and a background color for each data cell, wherein a combination of the shape, foreground and background colors for the data cell is chosen from a plurality of such combinations in accordance with a value of the digital data to be encoded; and coloring some pixels in the data cell with a foreground color and other pixels with a background color, in accordance with the shape, foreground and background colors for the data cell determined above. The decoding steps include segmenting the data cells, recognizing a shape, a foreground color of the shape and a background color of the data cell, and obtaining digital data from a combination of the shape and foreground and background colors in each data cell.

Abstract translation: 一种用于对颜色条形码进行编码和解码以增加其数据容量的方法。 所述编码步骤包括确定每个数据单元的形状，前景色和背景颜色，其中根据所述数据单元的值从多个这样的组合中选择数据单元的形状，前景和背景颜色的组合 要编码的数字数据; 并且根据上面确定的数据单元的形状，前景和背景颜色，用前景色和具有背景颜色的其他像素在数据单元中着色一些像素。 解码步骤包括分割数据单元，识别形状，形状的前景色和数据单元的背景颜色，以及从每个数据单元中的形状和前景以及背景颜色的组合获得数字数据。