Color image processing apparatus with a plurality of addressable characteristic conversion tables for compensating for differences in the spectral characteristics of different input devices
First Claim
1. A color image signal processing apparatus, comprising:
- input means for receiving a color image signal connectable to plural kinds of color input devices, wherein said input devices may have different spectral characteristics;
conversion means for converting characteristics of the color image signal received by said input means according to one of a plurality of predetermined conversion tables, said one conversion table being addressed by the color image signal received by said input means and outputting a processed color image signal;
switching means for selecting said one conversion table of said conversion means according to the kind of color input device connected to said input means;
output means for receiving the processed color image signal, said output means being common to said plural kinds of input devices; and
processing means for receiving the processed color image signal outputted from said one conversion table and providing the processed color image signal to said common output means.
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Abstract
There is disclosed an image processing apparatus for processing an image signal in which the mode of image processing is rendered variable to adapt to plural input devices. More specifically, a conversion matrix circuit receives image signals from one of a plurality of different input devices and converts the image signals into corrected additive primary color signals red, green and blue. The conversion matrix circuit compensates for any differences in the spectral characteristics of the different input devices. The matrix includes a plurality of conversion tables stored in memory for performing the conversion. A selected one of the conversion tables is addressed by the image signals.
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Citations
14 Claims
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1. A color image signal processing apparatus, comprising:
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input means for receiving a color image signal connectable to plural kinds of color input devices, wherein said input devices may have different spectral characteristics; conversion means for converting characteristics of the color image signal received by said input means according to one of a plurality of predetermined conversion tables, said one conversion table being addressed by the color image signal received by said input means and outputting a processed color image signal; switching means for selecting said one conversion table of said conversion means according to the kind of color input device connected to said input means; output means for receiving the processed color image signal, said output means being common to said plural kinds of input devices; and processing means for receiving the processed color image signal outputted from said one conversion table and providing the processed color image signal to said common output means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A color image data processing apparatus, comprising:
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color image data storing means for storing color image data, said storing means being a source for producing first color image data; color image reading means for reading a color image, said reading means being a source for producing second color image data; input means for receiving color image data connectable to either said color image data storing means or to said color image reading means; conversion means for converting characteristics of the color image data received by said input means according to one of a plurality of predetermined conversion tables, said one conversion table being addressed by the color image data received by said input means and outputting processed color image data; switching means for selecting said one conversion table of said conversion means according to whether the source for producing the color image data is said color image data storing means or said color image reading means, said source being connected to said input means; an image reproduction means being common to said color image data storing means and to said color image reading means; and processing means for receiving the processed color image data outputted from said one conversion table and providing the processed color image data to said common image reproduction means.
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10. A color image signal processing apparatus, comprising:
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input means for receiving a color image signal connectable to plural kinds of color input devices, wherein said input devices may have different spectral characteristics; conversion means for converting characteristics of the color image signal received by said input means according to predetermined conversion parameters and outputting a processed color image signal; switching means for selecting the conversion parameters of said conversion means according to the kind of color input device connected to said input means, said switching means being adapted to select said conversion parameters in accordance with the connection of said color input devices to said input means; output means for receiving the processed color image signal, said output means being common to said plural kinds of color input devices; and processing means for receiving the processed color image signal outputted from said conversion means and providing the processed color image signal to said output means. - View Dependent Claims (11, 12, 13, 14)
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Specification