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US 4,907,076 AGranted
Color balance processing apparatus wherein color component signals are corrected through comparison with a reference value
AssigneeCanon Kabushiki Kaisha
InventorHidefumi Ohsawa
Life of this patent
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Abstract
A color image information processing apparatus includes a plurality of color separation circuits for separating input information into image information for the respective colors on the basis of constants and a CPU for comparing the image information for each color with a predetermined value, wherein each separation circuit changes a corresponding constant in accordance with the result of the comparison by the CPU.
Claims31
A processing apparatus comprising:
- input means for inputting color image information, said input means inputting a plurality of color component signals;
- a plurality of processing means for processing each color component signal by mixing said plurality of color component signals at a rate corresponding to a predetermined constant;
- and
- comparison means for comparing a level of each color component signal, processed by said processing means, with a predetermined value,
- wherein said plurality of processing means changes the constant in accordance with the results of the comparison by said comparison means.
2 more elements
An apparatus comprising:
- a plurality of converting sensor parts for converting a color image into a plurality of color component signals by dividing the color image into different portions, each of said sensor parts having plural kinds of color filters and respectively converting the different portions of the color image;
- means for simultaneously correcting a color balance among the respective output color component signals output from said plurality of sensor parts;
- and
- control means for controlling said correcting means such that the color balance of the output color component signals corresponding to at least two of said plurality of sensor parts being substantially the same.
1 more element
A color image pickup apparatus comprising:
- (a) means for converting a color image into a plurality of color component signals by dividing the color image into different portions, said converting means being divided into a plurality of sensing parts, and each part having plural kinds of color filters, and said plurality of sensing parts converting the different portions of the color image;
- (b) means for readng said plurality of color component signals from said converting means;
- (c) means for causing said reading means to operate when said converting means converts a predetermined color image;
- (d) means for detecting a level corresponding to said color component signal;
- and
- (e) means for simultaneously controlling a color balance of said plurality of color component signals in accordance with a detection by said detecting means, such that the color balance of the respective color component signals of each of said plurality of sensing parts being substantially the same.
3 more elements
A color image information processing apparatus comprising:
- (a) a plurality of input units for inputting color image information, each of said units inputting a plurality of color component signals and said plurality of input units respectively inputting the plurality of color component signals which are obtained by respectively dividing different portions of a color image;
- and
- (b) adjust means for simultaneously correcting the color component signals output from said plurality of input units, said adjust means performing correction using a common reference value with respect to said plurality of input units.
Dependencies are inferred from the claim text.