Image reading apparatus and computer-readable storage medium

Abstract

An image reading apparatus of the present invention includes an imaging section which images information described in a read target medium consisting of a plurality of pages, and has a temporary storage section which stores a newly captured image as a current captured image, and stores an image that has been stored as a current captured image as a previous captured image each time the imaging section images the read target medium, a judging section which judges whether a current state is a page-turning state by analyzing the current captured image stored in the temporary storage section, and a determining section which determines the previous captured image stored in the temporary storage section as a storage target when the judging section judges that the current state is the page-turning state.

What is claimed is: 
     
         1 . An image reading apparatus including an imaging section which images information described in a read target medium consisting of a plurality of pages, comprising:
 a temporary storage section which stores a newly captured image as a current captured image, and stores an image that has been stored as a current captured image as a previous captured image each time the imaging section images the read target medium;   a judging section which judges whether a current state is a page-turning state by analyzing the current captured image stored in the temporary storage section; and   a determining section which determines the previous captured image stored in the temporary storage section as a storage target when the judging section judges that the current state is the page-turning state.   
     
     
         2 . The image reading apparatus according to  claim 1 , wherein the judging section recognizes marks respectively added to each page of the read target medium and judges whether the current state is the page-turning state based on a result of recognition of the marks. 
     
     
         3 . The image reading apparatus according to  claim 2 , wherein the judging section judges, after recognizing the marks respectively added to each page in an opened state by analyzing a current captured image obtained in a state where information contained in two pages of the opened read target medium is within an imaging area of the imaging section, whether the current state is the page-turning state based on relevance between the recognized marks. 
     
     
         4 . The image reading apparatus according to  claim 3 , wherein the judging section judges that the current state is not the page-turning state when the relevance between the marks respectively added to each page in the opened state indicates that the marks are identical to each other, and judges that the current state is the page-turning state when the marks are different from each other. 
     
     
         5 . The image reading apparatus according to  claim 1 , further comprising:
 a delete section which deletes the current captured image temporarily stored in the temporary storage section when the judging section judges that the current state is the page-turning state.   
     
     
         6 . The image reading apparatus according to  claim 1 , wherein the determining section determines the previous captured image stored in the temporarily storage section as a storage target, in response to an end instruction for instructing the imaging section to end imaging of the read target medium. 
     
     
         7 . The image reading apparatus according to  claim 1 , wherein the judging section judges whether page-turning has been performed based on a change state between the current captured image and the previous captured image by analyzing the current captured image and the previous captured image. 
     
     
         8 . The image reading apparatus according to  claim 7 , wherein the judging section compares contents of a plurality of areas in each of the current captured image and the previous captured image, and judges whether page-turning has been performed based on number of areas including image change, when analyzing the current captured image and the previous captured image. 
     
     
         9 . The image reading apparatus according to  claim 1 , further comprising:
 a detection section which detects orientation of a main body of the image reading apparatus; and   a first imaging control section which allows imaging by the imaging section when the orientation detected by the detection section is a predetermined orientation.   
     
     
         10 . The image reading apparatus according to  claim 9 , wherein the image reading apparatus is a portable terminal device, and
 wherein the first imaging section, with a main body of the portable terminal device standing upright and the imaging section being placed on upper side portion of the main body of the portable terminal device, allows imaging of the read target medium placed near a lower side portion of the main body of the portable terminal device, when the detection section detects that the main body of the portable terminal device is standing upright.   
     
     
         11 . The image reading apparatus according to  claim 1 , further comprising:
 a mode specifying section which selects and specifies an arbitrary image read mode from among a plurality of image read modes which have different imaging intervals according to a page-turning speed for the read target medium consisting of the plurality of pages; and   a second imaging control section which controls imaging timing of the imaging section such that an imaging interval according to the image read mode specified by the mode specifying section is achieved.   
     
     
         12 . A non-transitory computer-readable storage medium having stored thereon a program that is executable by a computer, the program being executable by the computer to perform functions comprising:
 processing for judging, in a state where a newly captured image is temporarily stored as a current captured image and an image that has been stored as a current captured image is temporarily stored as a previous image each time a read target medium consisting of a plurality of pages is imaged by an imaging section, whether a current state is a page-turning state by analyzing the temporarily-stored current captured image; and   processing for determining the temporarily-stored previous captured image as a storage target when the current state is judged to be the page-turning state.