Image processing device, image processing method and computer-readable medium
AssigneeCasio Computer Co., Ltd.
InventorsShogo Hashimoto, Akira Hamada, Yoshihiro Teshima
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Abstract
The present invention improves the recognition rate of an augmented reality marker and the processing speed thereof, simultaneously. In the present invention, a CPU binarizes actual image captured in an image sensor in accordance with an adaptive thresholding, and detects an augmented reality marker from within the binarized image. Then, the CPU determines a binarization threshold based on the augmented reality marker, and after binarizing the actual image captured in the image sensor in accordance with a fixed threshold binarization method using the binarization threshold, recognizes the augmented reality marker based on the binarized image.
Claims16
An image processing device comprising:
- an imaging section equipped with an image sensor;
- a first binarization section which performs processing to binarize an actual image captured in the image sensor in accordance with an adaptive thresholding;
- a first detecting section which detects an augmented reality marker from within the actual image binarized by the first binarization section;
- a threshold determining section which determines a binarization threshold based on the augmented reality marker detected by the first detecting section;
- a second binarization section which performs processing to binarize the actual image captured in the image sensor in accordance with a fixed threshold binarization method using the binarization threshold, after the binarization threshold is determined by the threshold determining section;
- and
- a second detecting section which detects the augmented reality marker based on the actual image binarized by the second binarization section.
An image processing method comprising;
- a first binarization step of performing processing to binarize an actual image captured in an image sensor in accordance with an adaptive thresholding;
- a first detecting step of detecting an augmented reality marker from within the actual image binarized in accordance with the adaptive thresholding;
- a threshold determining step of determining a binarization threshold based on the detected augmented reality marker;
- a second binarization step of performing processing to binarize the actual image captured in the image sensor in accordance with a fixed threshold binarization method using the binarization threshold, after the binarization threshold is determined;
- and
- a second detecting step of detecting the augmented reality marker based on the actual image binarized in accordance with the fixed threshold binarization method.
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:
- first binarization processing for binarizing an actual image captured in an image sensor in accordance with an adaptive thresholding;
- first detection processing for detecting an augmented reality marker from within the actual image binarized in accordance with the adaptive thresholding;
- threshold determining processing for determining a binarization threshold based on the detected augmented reality marker;
- second binarization processing for binarizing the actual image captured in the image sensor in accordance with a fixed threshold binarization method using the binarization threshold, after the binarization threshold is determined;
- and
- second detecting processing for detecting the augmented reality marker based on the actual image binarized in accordance with the fixed threshold binarization method.
Dependencies are inferred from the claim text.