Image processing method and apparatus
First Claim
1. An image processing method, comprising the steps of:
- acquiring input image data from an image recorded optically with a lens for taking a picture;
acquiring an information about the lens used to record said image; and
performing image processing schemes including at least sharpness enhancement on said input image data using the acquired information about the lens to produce output image data;
wherein a type of the lens used is identified from said acquired information about the lens and an intensity of the sharpness enhancement of the corresponding image is altered in accordance with the identified type of the lens.
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Abstract
The image processing method and apparatus acquire input image data from the image recorded optically with a taking lens, acquire the information about the lens used to record the image and perform image processing schemes on the input image data using the acquired lens information, provided that the type of the lens used is identified from the acquired lens information and the intensity of sharpness enhancement of the corresponding image is altered in accordance with the identified lens type. The characteristics of the taking lens may also be acquired from the lens information and using the obtained lens characteristics as well as the position information for the recorded image, the input image data is subjected to aberration correction for correcting the deterioration in image quality due to the lens characteristics, provided that the information about the focal length of the taking lens effective at the time of image recording is additionally used, or image processing schemes are performed in two crossed directions of the recorded image, or parameters for correcting aberrations in the imaging plane of the taking lens are scaled such that they are related to the output image data on a pixel basis. High-quality prints reproducing high-quality images can be obtained from original images that were recorded with compact cameras, digital cameras and other conventional inexpensive cameras using low-performance lenses.
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Citations
99 Claims
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1. An image processing method, comprising the steps of:
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acquiring input image data from an image recorded optically with a lens for taking a picture;
acquiring an information about the lens used to record said image; and
performing image processing schemes including at least sharpness enhancement on said input image data using the acquired information about the lens to produce output image data;
wherein a type of the lens used is identified from said acquired information about the lens and an intensity of the sharpness enhancement of the corresponding image is altered in accordance with the identified type of the lens. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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24. An image processing apparatus that acquires input image data from an image recorded optically with a lens for taking a picture and performs image processing schemes on said input image data to produce output image data, comprising:
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first acquisition means for acquiring a lens information about said taking lens used to record said image;
identifying means for identifying a lens type from the acquired lens information; and
image processing means for performing at least sharpness enhancement of the image;
wherein said image processing means alters an intensity of said sharpness enhancement of the corresponding image in accordance with an identification result of the lens type by said identifying means.
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52. An image processing method that acquires not only input image data from an image recorded optically with a taking lens but also a lens information about the taking lens used to record said image and which performs image processing schemes on said input image data using the obtained lens information, thereby producing output image data, comprising the steps of:
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acquiring not only an information about focal length effective at the time of recording said image but also lens characteristics of said taking lens from said lens information; and
correcting aberrations in the image derived from the taking lens used to record said image using the obtained lens characteristics, a position information for said recorded image and the information about said focal length. - View Dependent Claims (53, 54, 55, 56, 58, 59, 60, 61)
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57. An image processing apparatus which acquires input image data from the image recorded optically with a taking lens of variable focal length and performs image processing schemes on the input image data to produce output image data, comprising:
first acquisition means for acquiring an information about the taking lens used to record said image, second acquisition means for acquiring an information about the focal length of said taking lens effective at the time of recording said image, storage means for storing lens characteristics of the lens used to record said image, and aberration correcting means which, in accordance with the lens information acquired by said first acquisition means, obtains the lens characteristics of the corresponding lens from said storage means and which uses the obtained lens characteristics, a position information for said image and the information about the focal length of said lens acquired by said second acquisition means, thereby correcting the aberrations in the image derived from the taking lens used to record said image.
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62. An image processing method which acquires input image data from an optically recorded image and performs image processing schemes on the input image data to produce output image data, comprising the steps of:
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scaling preset parameters for correcting the aberrations which the lens used to record said image causes in the plane where said image is focused by means of at least one of an electronic scaling ratio for producing said output image data, number of input pixels in said input image data, a size of the input image and a size of the output image to produce aberration correction parameters that are related to said output image data on a pixel basis; and
correcting the aberrations in said image derived from the lens used to record the image by using said aberration correction parameters on the pixel basis.
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63. An image processing apparatus which acquires input image data from an optically recorded image and performs image processing schemes on the input image data to produce output image data, comprising:
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acquisition means for acquiring an information about taking lens used to record said image;
storage means for storing parameters for correcting the aberrations which the lens used to record said image causes in an imaging plane where said image is focused;
selection means by which a parameter for correcting the aberrations which the related lens causes on said imaging plane is selected from said storage means in accordance with the lens information acquired by said first acquisition means;
conversion means by which the parameter for correcting the aberrations on the imaging plane as selected by said selection means is scaled with at least one of an electronic scaling ratio for producing said output image data, number of input pixels in said input image data, a size of the input image and a size of the output image, whereby said parameter is converted to an aberration correcting parameter that is related to said output image data on a pixel basis; and
aberration correcting means which corrects the image aberrations derived from the image taking lens by using the aberration correcting parameter on the pixel basis converted by said conversion means. - View Dependent Claims (64, 65)
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66. An image processing method, comprising the steps of:
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acquiring not only input image data from the image recorded optically with a taking lens but also an information about the taking lens used to record said image;
obtaining lens characteristics of said taking lens from the acquired lens information; and
performing image processing schemes on said input image data by using the obtained lens characteristics and a position information for said recorded image;
wherein said input image data is subjected to the image processing schemes a first direction of said recorded image and a second direction crossing the first direction. - View Dependent Claims (67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80)
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81. An image processing apparatus which acquires input image data from the image recorded optically with a taking lens and performs specified image processing schemes on the input image data to produce output image data, comprising:
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acquisition means for acquiring an information about the taking lens used to record said image;
storage means for storing characteristics of said taking lens in accordance with the information about said taking lens; and
image processing means which performs the image processing schemes on said input image data in both a first direction of said recorded image and a second direction crossing the first direction, by using an information about pixel positions of the input image and the characteristics of the related taking lens as read from said storage means in accordance with the information about the taking lens acquired by said acquisition means. - View Dependent Claims (82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94)
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- 95. An image processing method, comprising the step of subjecting image data representing an image recorded on an image recording medium to image processing schemes in either a first direction or a second direction crossing said first direction or both directions, wherein if said image processing schemes are to be performed in both said first and second directions, contents of the image processing schemes in each of said first and second directions are altered.
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97. An image processing apparatus comprising:
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image processing means for performing unidirectional image processing schemes on image data that represents an image recorded on an image recording medium; and
control means for controlling said image processing means such that image processing schemes are performed on said image data in either a first direction or a second direction crossing said first direction or both directions, wherein if said control means controls said image processing means such that said image processing schemes are performed in both said first and second directions, said control means alters contents of said image processing schemes in each of said first and second directions. - View Dependent Claims (98, 99)
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Specification