Wednesday, October 10, 2007

Pattern Card Detection and Analysis

After a face detection, we will also need to do the pattern card detection as well as analysis. The pattern card detection, is somewhat similar to a face detection. It requires numerous trainings where many samples are being fed into the training programme. This will result in an XML document, which is the main document for the recognition part. This vigorous training has been done by Kester.

This detection programme, uses similar algorithm like the face detection programme, in which a different XML document was used.

Next was the analysis portion. After the detection is completed, a smaller image will be generated by the programme will be used for the analysis. The smaller image is converted to a gray scale image, in another words, only black and white pixels present. This make the coding somewhat easier, since I only have to deal with 2 kinds of pixels.

The analysis went quite well and I had easily find the size of the pattern in pixels. This information is useful in calculating all real measurements such as the height and the shoulder-width of the user.

This is done using the line scanning technique discussed before.

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