Image processing method of generating conversion data for a scanner and calibration method employing the scanner
AssigneeCanon Kabushiki Kaisha
InventorNobuyuki Nakajima
Life of this patent
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Abstract
A calibration for a scanner, which is used as a densitometer, is carried out always with high accuracy. More specifically, an image processing method of generating a conversion condition for a scanner which is used for reading an image and generating image data, is provided. The method including the steps of: obtaining a reading property of an object scanner based on image data obtained by that the object scanner reads a chart, and generating the conversion condition for the object scanner based on the reading property of the object scanner, a previously prepared reading property of a standard scanner and a previously prepared brightness-density conversion condition for the standard scanner.
Claims12
An image processing method comprising the steps of:
- holding a correction condition for a first scanner;
- judging as to whether a scanner used for reading a chart printed by a printer is the first scanner;
- generating a correction condition for the scanner that is an object of judging in said judging step, in the case that the scanner of the judging object is not the first scanner;
- and
- correcting a read value of the chart with use of the correction condition for the scanner of the judging object or of the correction condition held in said holding step.
An image processing method comprising the steps of
- displaying measurement results obtained by reading for generating a correction condition for a scanner, on a display;
- displaying examples which are displayed so as to be compared with the measurement results and are used for making judgments about the measurement results, the examples being, on the display;
- and
- executing an input for changing reading conditions of the scanner, based on the measurement results and the examples displayed on the display.
A program for causing an information processing apparatus to execute an image processing, the image processing comprising the steps of:
- holding a correction condition for a first scanner;
- judging as to whether a scanner used for reading a chart printed by a printer is the first scanner;
- generating a correction condition for the scanner that is an object of judging in said judging step, in the case that the scanner of the judging object is not the first scanner;
- and
- correcting a read value of the chart with use of the correction condition for the scanner of the judging object or of the correction condition held in said holding step.
A program for causing an information processing apparatus to execute an image processing, the image processing comprising the steps of:
- displaying measurement results obtained by reading for generating a correction condition for a scanner, on a display;
- displaying examples which are displayed so as to be compared with the measurement results and are used for making judgments about the measurement results, the examples being, on the display;
- and
- executing an input for changing reading conditions of the scanner, based on the measurement results and the examples displayed on the display.
Dependencies are inferred from the claim text.