IMAGE DETECTION DEVICE AND IMAGE DETECTION METHOD
First Claim
1. An image detection device detecting a specific image to be searched for from an image, the device comprising:
- a size changing means for changing a size of an original image according to a set scaling factor;
a detection means for detecting the specific image to be searched for within a detectable size range of the image detection device from the image, the size of which has been changed by the size changing means;
a change means for changing the scaling factor; and
a control means for performing control so as to make the processing by the size changing means and the processing by the detection means to be carried out again using the scaling factor changed by the change means.
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Abstract
The present invention provides an image detection device and an image detection method for efficiently detecting a specific image area existing within an image. The image detection device of the present invention first changes a size of an original image using an initial value of a scaling factor (enlargement/reduction ratio) against the original image and detects the specific image (e.g. number plate). Next, the image detection device carries out the change of the original image size and the detection of the specific image repeatedly by changing the scaling factor. Further, an embodiment of the present invention realizes a high speed by repeating the detection while using the enlarged or reduced images, and also realizes the high speed by determining an area where another specific image cannot exist and carrying out the detection efficiently using this information.
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Citations
17 Claims
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1. An image detection device detecting a specific image to be searched for from an image, the device comprising:
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a size changing means for changing a size of an original image according to a set scaling factor; a detection means for detecting the specific image to be searched for within a detectable size range of the image detection device from the image, the size of which has been changed by the size changing means; a change means for changing the scaling factor; and a control means for performing control so as to make the processing by the size changing means and the processing by the detection means to be carried out again using the scaling factor changed by the change means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An image detection method detecting a specific image to be searched for from an image, the method comprising the steps of:
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changing a size of an original image according to a set scaling factor; detecting the specific image to be searched for from the image, the size of which has been changed by the size changing step; changing the scaling factor; and performing control so as to make the size changing step and the detecting step to be carried out again using the scaling factor changed by the changing step. - View Dependent Claims (15, 16, 17)
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Specification