Image-reader selecting parameter

An image-reader comprising:

• a conveyance unit that is configured to sequentially convey a plurality of document sheets at a predetermined interval along a conveying path, each document sheet including a first surface and a second surface;
• a first reading unit that is configured to generate the first surface worth of first image data by reading a first surface of a document sheet on the conveying path;
• a second reading unit that is configured to generate the second surface worth of second image data by reading a second surface of a document sheet on the conveying path;
• a storing unit that is configured to store the first image data and the second image data;
• a process surface determining unit that is configured to determine which of the first surface and the second surface is a process surface;
• an acquiring unit that is configured to acquire one of at least part of the first image data and at least part of the second image data, the acquired one corresponding to the process surface from the storing unit;
• a parameter storing unit that is configured to store a first parameter that corresponds to the first surface and a second parameter that corresponds to the second surface;
• a selecting unit that is configured to select one of the first parameter and the second parameter as a process parameter that corresponds to the process surface, the selecting unit outputting the process parameter;
• and
• an image process executing unit that is configured to execute an image process on the one of at least part of the first image data and at least part of the second image data by using the process parameter,
• wherein the first image data includes a plurality of sets of first line data and the second image data includes a plurality of sets of second line data,
• wherein the first reading unit generates each set of first line data by reading one line of the first surface,
• wherein the second reading unit generates each set of second line data by reading one line of the second surface,
• wherein the acquiring unit acquires one of a set of first line data and a set of second line data, the acquired one corresponding to the process surface from the storing unit,
• wherein the process surface determining unit specifies first number of sets of first line data that the acquiring unit has not acquired from the storing unit and second number of sets of second line data that the acquiring unit has not acquired from the storing unit, the process surface determining unit determining the process surface based on the first number and the second number.

An image-reader comprising:

• a conveyance unit that is configured to sequentially convey a plurality of document sheets at a predetermined interval along a conveying path, each document sheet including a first surface and a second surface;
• a first reading unit that is configured to generate the first surface worth of first image data by reading a first surface of a document sheet on the conveying path;
• a second reading unit that is configured to generate the second surface worth of second image data by reading a second surface of a document sheet on the conveying path;
• a storing unit that is configured to store the first image data and the second image data;
• a process surface determining unit that is configured to determine which of the first surface and the second surface is a process surface;
• an acquiring unit that is configured to acquire one of at least part of the first image data and at least part of the second image data, the acquired one corresponding to the process surface from the storing unit;
• a parameter storing unit that is configured to store a first parameter that corresponds to the first surface and a second parameter that corresponds to the second surface;
• a selecting unit that is configured to select one of the first parameter and the second parameter as a process parameter that corresponds to the process surface, the selecting unit outputting the process parameter;
• and
• an image process executing unit that is configured to execute an image process on the one of at least part of the first image data and at least part of the second image data by using the process parameter,
• wherein the process surface determining unit sets the process surface to one of the first surface and the second surface and determines whether first number of first-lines in one of the first line data and the second line data is greater than a prescribed number, the one of the first line data and the second line data being stored in the storing unit and corresponding to the process surface, the first-lines in the one of the first line data and the second line data having not been acquired by the acquiring unit,
• wherein when the process surface determining unit determines that the first number is not greater than the prescribed number, the process surface determining unit changes the process surface to another one of the first surface and the second surface, and determines whether second number of second-lines in another one of the first line data and the second line data is greater than the prescribed number, the another one of the first line data and the second line data being stored in the storing unit and corresponding to the process surface, the second-lines in the another one of the first line data and the second line data having not been acquired by the acquiring unit,
• wherein the process surface determining unit determines that the first number of first-lines is greater than the prescribed number, the acquiring unit acquires one of at least part of the first image data and at least part of the second image data, the acquired one corresponding to the process surface from the storing unit, and the image process executing unit executes the image process on the acquired one of the at least part of the first image data and the at least part of the second image data by using the process parameter corresponding to the process surface,
• wherein the process surface determining unit determines that the second number of second-lines is greater than the prescribed number, the acquiring unit acquires one of at least part of the first image data and at least part of the second image data, the acquired one corresponding to the process surface from the storing unit, and the image process executing unit executes the image process on the acquired one of the at least part of the first image data and the at least part of the second image data by using the process parameter corresponding to the process surface.