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    • 10. 发明授权
    • Detecting embossed characters on form factor
    • 检测形状上的浮雕字符
    • US08942420B2
    • 2015-01-27
    • US13654748
    • 2012-10-18
    • QUALCOMM Incorporated
    • Duck Hoon KimYoung-Ki BaikTe-Won Lee
    • G06K9/00
    • G06K9/72G06K2209/01G06Q20/24G06Q20/3276
    • A portable computing device reads information embossed on a form factor utilizing a built-in digital camera and determines dissimilarity between each pair of embossed characters to confirm consistency. Techniques comprise capturing an image of a form factor having information embossed thereupon, and detecting embossed characters. The detecting utilizes a gradient image and one or more edge images with a mask corresponding to the regions for which specific information is expected to be found on the form factor. The embossed form factor may be a credit card, and the captured image may comprise an account number and an expiration date embossed upon the credit card. Detecting embossed characters may comprise detecting the account number and the expiration date of the credit card, and/or the detecting may utilize a gradient image and one or more edge images with a mask corresponding to the regions for the account number and expiration date.
    • 便携式计算设备使用内置的数码相机读取在形状因子上压印的信息,并且确定每对压花字符之间的不相似性以确认一致性。 技术包括捕获具有在其上压印的信息的形状因子的图像,以及检测压花字符。 该检测利用梯度图像和一个或多个边缘图像,该边缘图像具有对应于预期在形状因子上找到特定信息的区域的掩模。 浮雕形状因子可以是信用卡,并且所捕获的图像可以包括在信用卡上压印的帐号和到期日期。 检测浮雕字符可以包括检测信用卡的帐号和有效期,和/或检测可以利用梯度图像和一个或多个具有对应于帐号和截止日期的区域的掩码的边缘图像。