Motoki Kamitani

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A method has been developed for detecting watermarks using a smartphone. A smartphone with a reader application based on this method and held over a watermarked printed image can detect a watermark in the image and use it to obtain corresponding product information. To reduce the computational complexity of a full search for each possible geometrical(More)
A method has been developed for detecting watermarks in displayed video content using a smart phone. The computational load involved in processing a full-size image is reduced by using Gaussian filtering to analyze the complexity of the image regions. Watermarks are assumed to be embedded in those regions with higher complexity. Each region is then checked(More)
The implementation of a previously developed method for rough image analysis for detecting watermarks in displayed video content using a smart device has been improved. The computational load involved in processing a full-size image was reduced by using Gaussian filtering to analyze the complexity of the image regions. Watermarks are assumed to be embedded(More)
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