1. An image reading apparatus comprising:
an obtainment unit, configured to read an image and obtains a Modulation Transfer Function (MTF) value of the image; and
a super-resolution processing unit, configured to perform super-resolution processing on the image in the case where the MTF value obtained by the obtainment unit is lower than an MTF value specified in advance so that the MTF value of the image becomes the MTF value specified in advance.
2. The image reading apparatus according to claim 1, further comprising a determination unit, configured to determine a number of images to be used in the super-resolution processing so that the MTF value of the image obtained by the obtainment unit is equal to the MTF value specified in advance.
3. The image reading apparatus according to claim 1, further comprising:
a storage unit, configured to store the number of images to be used in the super-resolution processing determined so that the MTF value of the image obtained by the obtainment unit is equal to the MTF value specified in advance,
wherein the super-resolution processing unit performs the super-resolution processing using the number of images stored in the storage unit.
4. An image reading method comprising the steps of:
reading an image and obtaining a Modulation Transfer Function (MTF) value of the image; and
performing super-resolution processing on the image in the case where the MTF value obtained in the step of reading and obtaining is lower than an MTF value specified in advance so that the MTF value of the image becomes the MTF value specified in advance.
5. The image reading method according to claim 4, further comprising a step of determining a number of images to be used in the super-resolution processing so that the obtained MTF value of the image and the MTF value specified in advance.
6. The image reading method according to claim 4, further comprising a step of:
storing the number of images to be used in the super-resolution processing determined so that the obtained MTF value of the image and the MTF value specified in advance,
wherein in the step of performing super-resolution processing, the super-resolution processing is performed using the number of images stored in the storage unit.
7. An image reading apparatus comprising:
a scanner unit, configured to scan optically an image and outputs multiple pieces of low-resolution image data having a first resolution, each piece of low-resolution image data having its phase shifted relative to the other pieces of low-resolution image data;
a super-resolution processing unit, configured to generate high-resolution image data having a second resolution higher than the first resolution using the multiple pieces of low-resolution image data outputted by the scanner unit; and
a saving unit, configured to save the number of pieces of low-resolution image data used by the super-resolution processing unit,
wherein the number saved in the saving unit is a value whereby the resolution of the high-resolution image data generated by the super-resolution processing becomes a resolution specified in advance.
8. The image reading apparatus according to claim 7,
wherein the saving unit further saves a table in which the value of the first resolution is registered in association with the number, and
the apparatus further comprises:
a measurement unit, configured to measure the resolution of the low-resolution image data outputted by the scanner unit; and
a unit, configured to refer to the table and determine the number of pieces of low-resolution image data so that the resolution of the high-resolution image data generated by the super-resolution processing unit becomes the resolution specified in advance, taking the resolution measured by the measurement unit as the first resolution.
9. An image reading method performed by an image reading apparatus, the image reading apparatus including a saving unit that saves the number of pieces of low-resolution image data used by a super-resolution processing unit, and the method comprising the steps of:
optically scanning an image and outputting multiple pieces of low-resolution image data having a first resolution, each piece of low-resolution image data having its phase shifted relative to the other pieces of low-resolution image data; and
generating high-resolution image data having a second resolution higher than the first resolution using the multiple pieces of low-resolution image data outputted in the step of scanning and outputting,
wherein the number saved in the saving unit is a value whereby the resolution of the high-resolution image data generated in the step of generating becomes a resolution specified in advance.
10. An information processing apparatus comprising:
a table, configured to save a first Modulation Transfer Function (MTF) value in association with a number of pieces of low-resolution image data, having the first MTF value, necessary when generating, though super-resolution processing using the low-resolution image data, high-resolution image data having a second MTF value that is higher than the first MTF value;
a determination unit, configured to obtain information indicating the resolution of an image read without performing super-resolution processing from an image reading apparatus having a super-resolution processing function, and determine a number corresponding to the resolution by referring to the table; and
a unit, configured to output the number determined by the determination unit.
11. The information processing apparatus according to claim 10, further comprising:
a unit, configured to obtain the MTF value of image data read by the image reading apparatus as the first MTF value, perform the super-resolution processing with the image reading apparatus changing the number of pieces of the image data, and obtain the MTF value of the high-resolution image data in association with the number; and
a unit, configured to judge whether the obtained MTF value of the high-resolution image data has achieved a target MTF value, and register, in the table, a number associated with the MTF value that achieves the target MTF value in association with the first MTF value.
12. The information processing apparatus according to claim 10,
wherein numbers corresponding to each of multiple MTF values are saved in the table; and
the determination unit determines, as the number corresponding to the MTF value, the number corresponding to the obtained MTF value, if that number is registered in the table, and a number obtained by interpolating two numbers respectively corresponding to two MTF values near the obtained MTF value, if that number is not registered in the table.
13. The information processing apparatus according to claim 10,
wherein the first MTF value and the number of pieces of low-resolution image data are registered in the table for each of multiple types of image processing apparatus; and
the determination unit determines, for each of the multiple types of image processing apparatus, the number of pieces of low-resolution image data for generating, through the super-resolution processing, high-resolution image data having the second MTF value common across the multiples types of image processing apparatus.
14. A control method for an information processing apparatus, the information processing apparatus including a table that saves a first Modulation Transfer Function (MTF) value in association with a number of pieces of low-resolution image data, having the first MTF value, necessary when generating, though super-resolution processing using the low-resolution image data, high-resolution image data having a second MTF value that is higher than the first MTF value, and the method comprising the steps of:
obtaining information indicating the MTF value of an image read without performing super-resolution processing from an image reading apparatus having a super-resolution processing function, and determining a number corresponding to the MTF value by referring to the table; and
outputting the number determined in the step of obtaining and determining.
15. A computer-readable storage medium having stored therein a program that causes a computer to function as:
an obtainment unit that reads an image and obtains an Modulation Transfer Function (MTF) value of the image; and
a super-resolution processing unit that performs super-resolution processing on the image in the case where the MTF value obtained by the obtainment unit is lower than an MTF value specified in advance so that the MTF value of the image becomes the MTF value specified in advance.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1-20. (canceled)
21. An ink jet recording method comprising:
supplying an ultraviolet-ray curable ink from an ink container to at least two heads through an ink pass, wherein said ink has a viscosity of 8 mPa\xb7s or more at 28\xb0 C.;
heating the ultraviolet-ray curable ink such that a temperature of the ultraviolet-ray curable ink becomes 28\xb0 C. to 40\xb0 C., and a viscosity of the ultraviolet-ray curable ink at the temperature becomes 15 mPa\xb7s or less;
ejecting the heated ultraviolet-ray curable ink from the at least two heads to a recording medium; and
curing the ultraviolet-ray curable ink attached to the recording medium.
22. The ink jet recording method according to claim 21, wherein recording
is performed using a line type ink jet recording apparatus which includes a line head with a length equal to or more than a length corresponding to a width of the recording width of the recording medium as the head.
23. The ink jet recording method according to claim 21, wherein the at least two heads are arranged in a width direction of the recording medium and form a line head.
24. The ink jet recording method according to claim 21, wherein an ink inflow amount of the ultraviolet-ray curable ink which is supplied from the ink path to the head is twice or more the maximum ink ejection amount in which the ultraviolet-ray curable ink is ejected from the head.
25. The ink jet recording method according to claim 21, wherein a heating mechanism which heats the ultraviolet-ray curable ink is provided at the ink pass.
26. The ink jet recording method according to claim 21, wherein the ink pass supplies the ultraviolet-ray curable ink from an ink container to the at least two heads is one ink pass.
27. The ink jet recording method according to claim 21, wherein the ultraviolet-ray curable ink includes (meth)acrylic acid esters containing a vinyl ether group expressed in the following Formula (I).
CH2=CR1-COOR2-O\u2014CH\u2550CH\u2014R3\u2003\u2003(I)
(wherein R1 indicates a hydrogen atom or a methyl group, R2 indicates a divalent organic residue having 2 to 20 carbon atoms, and R3 indicates a hydrogen atom or a monovalent organic residue having 1 to 11 carbon atoms).
28. The ink jet recording method according to claim 27, wherein the ultraviolet-ray curable ink further includes a monofunctional (meth)acrylate (here, excluding (meth)acrylic acid esters containing a vinyl ether group expressed in Formula (I)).
29. The ink jet recording method according to claim 21, wherein a light source used for the curing of the ultraviolet-ray curable ink is a light emitting diode.
30. The ink jet recording method according to claim 29, wherein the light emitting diode applies ultraviolet rays which have a peak intensity of 800 mWcm2 or more.
31. The ink jet recording method according to claim 21, wherein an epoxy resin is used for the head.
32. The ink jet recording method according to claim 21, wherein a degassing mechanism that degases the ultraviolet-ray curable ink is provided at the ink pass.
33. The ink jet recording method according to claim 32, wherein a heating mechanism which heats the ultraviolet-ray curable ink is provided at the ink pass;
the heating mechanism supplies the heated ultraviolet-ray curable ink to the degassing mechanism through the ink pass.