| 摘要 |
<p>When a search keyword is characteristically used in an image, it is detected more easily. An image search device 10 is provided with an image database 11 to store an image as a search target, a character string region extraction unit 13 to extract a character string region including a character string in the image, a character string candidate recognition unit 14 to recognize the character string in the character string region, a visual saliency calculation unit 16 to calculate a visual saliency of the character string based on any of a size, a color, a shape, and a decoration of characters forming the character string, and a contrast between a character color and a background color, from an image of the character string region, a search keyword input unit 17 to input a search keyword, a search unit 18 to perform a search to determine whether the keyword matches the character string recognized from the image and to calculate a score value of the image including the character string, from the visual saliency calculated from the character string region from which the matching character string was recognized, and an output unit 19 to output the result of the search according to the calculated score value.</p> |
