| 摘要 |
An image reading apparatus includes an image reading portion for outputting image data of an image read, and a signal processing portion for receiving the image data from the image reading portion and outputting a signal to an external device. The signal processing portion includes an image data transmitting system for transmitting the image data from the image reading portion as is, a histogram system for producing data concerning a histogram from the image data from the image reading portion and a histogram transmitting system for transmitting the data concerning the histogram produced by the histogram system in parallel with the image data transmitting system. Alternatively, an X-ray detecting apparatus including an X-ray image detecting portion for outputting image data of a detected image may be utilized in place of the image reading apparatus.
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