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US08437551B2 Devices and methods for restoring low-resolution text images 失效
用于恢复低分辨率文本图像的设备和方法

  • Patent Title: Devices and methods for restoring low-resolution text images
  • Patent Title (中): 用于恢复低分辨率文本图像的设备和方法
  • Application No.: US12681454
    Application Date: 2008-10-06
  • Publication No.: US08437551B2
    Publication Date: 2013-05-07
  • Inventor: Joseph P. NoonanPrabahan Basu
  • Applicant: Joseph P. NoonanPrabahan Basu
  • Applicant Address: US MA Medford
  • Assignee: Tufts University
  • Current Assignee: Tufts University
  • Current Assignee Address: US MA Medford
  • Agency: Lathrop & Gage LLP
  • International Application: PCT/US2008/078943 WO 20081006
  • International Announcement: WO2009/046419 WO 20090409
  • Main IPC: G06K9/34
  • IPC: G06K9/34
Devices and methods for restoring low-resolution text images
Abstract:
A system that extracts text from an image includes a capture device that captures the image having a low resolution. An image segmentation subsystem partitions the image into image segments. An image restoration subsystem generates a resolution-expanded image from the image segments and negates degradation effects of the low-resolution image by transforming the image segments from a first domain to a second domain and deconvolving the transformed image segments in the second domain to determine parameters of the low-resolution image. A text recognition subsystem transforms the restored image data into computer readable text data based on the determined parameters.
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