Image data processing apparatus for performing spatial filtering

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364415, 358111, 358160, 378901, G06F 3153, G06F 1531, H04N 532

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active

045905827

ABSTRACT:
In a digital radiographic technique, a spatial filtering process has been widely introduced. The image data processing apparatus includes a first storage device for storing original image data in a digital form which is used for medical diagnosis. A filtering device is provided for performing a filtering function to the original image data so as to control spatial frequency characteristics of the original image data. A second storage device is used for storing the filtered image data derived from the filtering device, and a first multiplexer device is provided for multiplying the filtered image data which is stored in the second storage device, by a first parameter so as to give a first weighted value to the filtered image data. A second multiplier device is used for multiplying the original image data which is stored in the first storage means, by a second parameter so as to give a second weighted value to the original image data, and a parameter input terminal device is provided for producing the two parameters and delivering the same to the first and second multiplier devices respectively. An adder is provided for performing a linear combination operation between the first and second multiplied image data so as to obtain an added image data whose spatial frequency characteristics are controlled to be different from that of the original image data.

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