Figure 6 | Scientific Reports

Figure 6

From: A new registration algorithm of electronic portal imaging devices images based on the automatic detection of bone edges during radiotherapy

Figure 6

Example of determining of one-point border of a bone. (A) A random point near the border of the bone and the vertical line passing through the point. (B) Gray value of each pixel in the vertical line. (C) Gradient value of each pixel in the vertical line. The pixel of maximal Gradient value is identified as the corresponding point of the bone border.

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