CN1739284A - 具有扫描辅助的移动电话 - Google Patents

具有扫描辅助的移动电话 Download PDF

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Publication number
CN1739284A
CN1739284A CNA2003801088166A CN200380108816A CN1739284A CN 1739284 A CN1739284 A CN 1739284A CN A2003801088166 A CNA2003801088166 A CN A2003801088166A CN 200380108816 A CN200380108816 A CN 200380108816A CN 1739284 A CN1739284 A CN 1739284A
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image
video camera
file
camera
mobile phone
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CNA2003801088166A
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English (en)
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M·西蒙
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Siemens AG
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Siemens AG
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
    • H04N1/00281—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a telecommunication apparatus, e.g. a switched network of teleprinters for the distribution of text-based information, a selective call terminal
    • H04N1/00307—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a telecommunication apparatus, e.g. a switched network of teleprinters for the distribution of text-based information, a selective call terminal with a mobile telephone apparatus
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/10—Character recognition
    • G06V30/14—Image acquisition
    • G06V30/142—Image acquisition using hand-held instruments; Constructional details of the instruments
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/19—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays
    • H04N1/195—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a two-dimensional array or a combination of two-dimensional arrays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/19—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays
    • H04N1/195—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a two-dimensional array or a combination of two-dimensional arrays
    • H04N1/19594—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a two-dimensional array or a combination of two-dimensional arrays using a television camera or a still video camera

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Studio Devices (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Telephone Function (AREA)
  • Image Input (AREA)

Abstract

本发明涉及一种用于利用摄像机(K)来尤其扫描文件的方法，其中将图像或子图像的序列合并成结果图像，在该方法中将参考图案(F)投影到摄像机视野中，并且在该方法中基于该图案(F)在各个图像中的几何信息来补偿这些图像的成像差别。

Description

具有扫描辅助的移动电话
本发明涉及一种用于尤其是扫描文件的方法以及一种根据权利要求2的前序部分的移动电话。
将具有例如低分辨率的摄像机用于文件的扫描是公知的。在此情况下，将摄像机或移动电话从低的距离在文件上方移动。由此时所摄取的图像或子图像产生结果图像。
例如以典型地为15或30Hz的高扫描频率来实现图像的录制。出于该原因，相邻的图像具有很高的图像重叠。通过从相应图像中心接连排列窄的图像条，并且在考虑到摄像机移动的情况下，可以连续地建立高分辨率的结果图像。
但是摄像机和文件之间的距离的微小变化以及摄像机的轻微的倾斜、正如它们在摄像机被握在手中时出现的那样已经导致所成像的文件内容的很有干扰性的大小变化。在第一处理步骤中必须互相补偿这些大小变化，以便可以无差错地建立高分辨率的结果图像。摄像机传感器相对于文件的、尤其是在距离和倾斜方面的位置的确定是用于差错补偿的基本并且重要的前提。从相继的图像中计算出相对的位置信息是一种已知措施，该措施很复杂，并且大多数情况下提供很不稳定的结果。一般仅能非常困难地基于所录制的图像信息通过图像处理来检测摄像机相对于文件的倾斜。
本发明所基于的任务在于，在一种用于扫描的方法中和在一种移动电话中使文件的扫描变得简单。
根据本发明，对于方法来说通过权利要求1中所说明的特征来解决该任务，而对于移动电话来说通过权利要求2中所说明的特征来解决该任务。
根据本发明的方法或移动电话能够实现快速而稳健地确定摄像机传感器相对于文件的相对位置。
根据本发明将参考图案叠加到摄像机的视野中。对图像中的该图案的几何形状的分析能够实现对图像的成像差别的补偿。
持久地将小的参考图案投影到摄像机视野之内的相同位置上，并且在所录制的图像中通过图像处理算法来对该小的参考图案进行分析。由投影到文件表面上并在传感器中成像的参考图案的几何信息明确地在三维空间中确定传感器相对于文件的位置。通过采用参考图案，利用数字图像处理方法来提取用于补偿图像的成像差别所需的几何信息是非常稳健和迅速的，并且不依赖于所扫描的文件的内容来实现该提取。
例如持久地被投影到摄像机视野之内的相同位置上的小的十字线是一种合适的参考图案。由十字线大小(距离)和十字线轴线的相对长度(在x和y方向上的倾斜)的信息来明确地在三维空间中确定传感器相对于文件的位置。
本方法的优点总结如下：
·在确定传感器到文件的相对位置时快速并且稳健，
·不依赖于所扫描的文件的内容，很准确地确定传感器的距离和倾斜。
以下借助在附图中示出的实施例来说明本发明。
如在图1中所示出的那样，例如在手机或移动无线电设备上实现用于确定摄像机K相对于(未详细表示的)文件的位置的方法，该手机或移动无线电设备具有以下特征：
·例如在移动电话MT的背面的摄像机K，用于从环境中录制图像，
·用于处理图像信息和用于确定相对的传感器位置的处理器，
·在手机MT的背面的发光二极管L，用于将十字线F投影到摄像机K的视野中。
为了扫描例如文件，将移动电话MT以微小的距离在文件上方移动。作为所设计的实例，粗略地画出了参考图案F的投影的表征特征，该参考图案F用于确定相对的传感器位置：
与情况b)比较的情况a)
摄像机在情况a)和b)中平行于文件表面。摄像机到文件的距离在情况a)中大于在情况b)中。由于该原因，在摄像机图像中所投影的十字线F在情况b)中小于在情况a)中。十字线大小与传感器距离直接相关，并且可以分别从摄像机单个图像中计算出来。
情况c)
摄像机K或摄像机传感器相对于文件原稿是倾斜的。由与关于十字线轴线的相对长度的信息有关的、十字线的绝对大小，可以明确地确定传感器在三维空间中相对于文件的位置。

Claims (2)

1.用于利用摄像机(K)来尤其扫描文件的方法，其中将图像或子图像的序列合并成结果图像，
在该方法中，将参考图案(F)投影到摄像机视野中，以及
在该方法中，基于所述图案(F)在各个图像中的几何信息来补偿所述图像的成像差别。
2.移动电话(MT)，具有摄像机(K)并具有图像处理装置，用于由在扫描过程中所获取的图像或子图像产生结果图像，其特征在于，
投影装置(L)，通过该投影装置(L)可以将参考图案(F)投影到摄像机视野中，以及
用于基于所述图案(F)在各个图像中的几何信息来补偿所述图像的成像差别的装置。
CNA2003801088166A 2003-01-15 2003-10-30 具有扫描辅助的移动电话 Pending CN1739284A (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP03000869.2 2003-01-15
EP03000869A EP1439689A1 (de) 2003-01-15 2003-01-15 Mobiltelefon mit einer Scan-Hilfe

Publications (1)

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CN1739284A true CN1739284A (zh) 2006-02-22

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US (1) US7773120B2 (zh)
EP (2) EP1439689A1 (zh)
JP (1) JP2006514797A (zh)
CN (1) CN1739284A (zh)
WO (1) WO2004064383A1 (zh)

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CN104159000A (zh) * 2014-08-21 2014-11-19 广东欧珀移动通信有限公司 一种扫描图像获取方法及装置

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KR101352377B1 (ko) * 2012-01-20 2014-01-24 한국지질자원연구원 노두의 상태를 확인하기 위한 촬영장치
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* Cited by examiner, † Cited by third party
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CN104159000A (zh) * 2014-08-21 2014-11-19 广东欧珀移动通信有限公司 一种扫描图像获取方法及装置
CN104159000B (zh) * 2014-08-21 2018-09-04 广东欧珀移动通信有限公司 一种扫描图像获取方法及装置

Also Published As

Publication number Publication date
EP1584181A1 (de) 2005-10-12
US20060146359A1 (en) 2006-07-06
EP1439689A1 (de) 2004-07-21
US7773120B2 (en) 2010-08-10
JP2006514797A (ja) 2006-05-11
WO2004064383A1 (de) 2004-07-29

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