Detection of Scale Interval on a Ruler in Digital Image
نویسندگان
چکیده
Abstract When we have a digital image which contains some objects and a ruler, we know the size of objects by rough estimate. Since measuring the object size in the digital image is usually manual, we developed the detection method of scale interval on a ruler. In our method we transfer digital image into frequency space using two-dimensional discreet fourier transformation, a specific frequency appears. This means that the image have cyclic pattern like scale on a ruler. Thus we can calculate the scale interval by the detected frequency.
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