Portable terminal and character reading method using a portable terminal
First Claim
1. A portable terminal, comprising:
- a screen image pickup means for photographing text;
a character clipping means for clipping an image containing at least one character string from an image of text photographed by the screen image pickup means;
a character recognition means for recognizing a character string contained in the image clipped by the character clipping means and acquiring a character code string of the clipped character string; and
a character string tracking means for comparing a current character code string acquired by the character recognition means and a previous character code string acquired from a character string contained in a clipped image of immediately preceding text captured by the screen image pickup means and for setting the current character code string as a tracking object character string when a character code line of the current character code string is at least partially the same as a character code line of a previous character code string.
4 Assignments
0 Petitions
Accused Products
Abstract
In a portable terminal, a character string clipping section clips an image of a character string from image data photographed by a screen image pickup device. A character recognition section recognizes the clipped image of the character string and acquires a character code string corresponding to the clipped character string. A character string tracking section sets the acquired character code string as a tracking object character string when the tracking object character string extends beyond the photographable area as well as tracking the tracking object character string or a marker character string ultimately used as an input character string while repeatedly updating the marker character string. A display section highlights the tracking object character string when the tracking object character string extends beyond the photographable area of the image pickup device and displays an arrow showing the relative direction.
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Citations
22 Claims
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1. A portable terminal, comprising:
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a screen image pickup means for photographing text; a character clipping means for clipping an image containing at least one character string from an image of text photographed by the screen image pickup means; a character recognition means for recognizing a character string contained in the image clipped by the character clipping means and acquiring a character code string of the clipped character string; and a character string tracking means for comparing a current character code string acquired by the character recognition means and a previous character code string acquired from a character string contained in a clipped image of immediately preceding text captured by the screen image pickup means and for setting the current character code string as a tracking object character string when a character code line of the current character code string is at least partially the same as a character code line of a previous character code string. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A character reading method for a portable terminal having an image pickup section, a character clipping section, a character recognition section, and a character string tracking section, comprising the steps of:
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photographing text repeatedly by the image pickup section at a predetermined time interval; clipping, at the character clipping section, an image containing at least one character string from an image of text photographed by the image pickup section; recognizing, at the character recognition section, a character string contained in the clipped image and acquiring a character code string of the clipped character string; comparing, at the character string tracking section, the acquired character code string from the character string clipped from the image of text photographed immediately preceding and setting, at the character string tracking section, the character string of the character code string as a tracking object character string when a character code line of the current character code string is at least partially the same as a character code line of a previous character code string; and setting, at the character string tracking section, the character code string of a character string as the tracking object character string which is ultimately used as an input character string. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. A character reading program stored in a memory of a portable terminal having an image pickup section, a character clipping section, a character recognition section, and a character string tracking section, the program comprising:
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program code for photographing text by the image pickup section; program code for clipping, at the character clipping section, an image containing at least one character string from an image of text photographed by the image pickup section; program code for recognizing, at the character recognition section, a character string contained in the clipped image and for acquiring a character code string of the clipped character string; and program code for comparing, at the character string tracking section, the acquired character code string from the character string clipped from the image of text photographed immediately preceding and for setting, at the character string tracking section, the character string of the character code string as a tracking object character string when a character code line of the current character code string is at least partially the same as a character code line of a previous character code string; and program code for setting, at the character string tracking section, the character code string of a character string as the tracking object character string which is ultimately used as an input character string. - View Dependent Claims (21, 22)
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Specification