Image read method and apparatus for optimizing shading conditions
AssigneeCanon Kabushiki Kaisha
InventorsKazuyuki Kondo, Kazuhiko Matsuoka
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Abstract
In an image read apparatus which reads an image from a recording medium, such as a film, and outputs image data, and shading correction data is set. Time elapsed since the shading correction data is set is counted. Before performing main scanning, whether or not the elapsed time is longer than a predetermined period is determined, and if it is, the shading correction data is updated. The read image data is processed with shading correction using the shading correction data which is updated as time elapses.
Claims20
An image read method, comprising:
- an image read step of reading an image from a recording medium and outputting image data;
- a setting step of setting shading correction data;
- a time counting step of counting elapsed time from a predetermined time;
- a display step of displaying a predetermined operational display for updating shading correction data when the elapsed time counted in said time counting step is longer than a predetermined period of time;
- an updating step of updating the shading correction data in response to a manual operation performed in accordance with the predetermined operational display;
- and
- an image processing step of performing image process on the image data obtained in said image read step using the shading correction data.
An image read apparatus, comprising:
- image read means for reading an image from a recording medium and outputting image data;
- setting means for setting shading correction data;
- storage means for storing the shading correction data set by said setting means;
- time counting means for counting elapsed time from a predetermined time;
- display means for displaying a predetermined operational display for updating shading correction data when the elapsed time counted by said time counting means is longer than a predetermined period of time;
- control means for controlling said setting means to update the shading correction data in response to a manual operation performed in accordance with the predetermined operational display;
- and
- image processing means for performing image process on the image data obtained by said image read means using the shading correction data stored in said storage means.
A control method for controlling an image read apparatus, comprising:
- a time counting step of counting elapsed time from a predetermined time;
- a display step of displaying a predetermined operational display for updating shading correction data when the elapsed time counted in said time counting step is longer than a predetermined period of time;
- and
- a designating step of designating to update shading correction data in response to a manual operation performed in accordance with the predetermined operational display.
A control method for controlling an image read apparatus, comprising;
- a time counting step of counting elapsed time from a predetermined time;
- a determination step of determining whether or not updating of shading correction data is to be performed when the elapsed time counted in said time counting step is longer than a predetermined period of time;
- a display step of displaying a predetermined operational display for updating shading correction data when it is determined in said determination step to perform updating of the shading correction data;
- and
- a designating step of designating to update the shading correction data to the image read apparatus in response to a manual operation performed in accordance with the predetermined operational display.
An information processing apparatus for controlling an image read apparatus, comprising:
- time counting means for counting elapsed time from a predetermined time;
- display means for displaying a predetermined operational display for updating shading correction data when the elapsed time counted by said time counting means is longer than a predetermined period of time;
- and
- designating means for designating to the image read apparatus to update shading correction data in response to a manual operation performed in accordance with the predetermined operational display.
An information processing apparatus for controlling an image read apparatus, comprising:
- time counting means for counting elapsed time from a predetermined time;
- determination means for determining whether or not updating of shading correction data is to be performed when the elapsed time counted by said time counting means is longer than a predetermined period of time;
- display means for displaying a predetermined operational display for updating shading correction data when it is determined by said determination means to perform updating of the shading correction data;
- and
- designating means for designating to the image read apparatus to update the shading correction data in response to a manual operation performed in accordance with the predetermined operational display.
Dependencies are inferred from the claim text.