Image processing apparatus
AssigneeFuji Photo Film Co., Ltd.
InventorNaoki Takaoka
Life of this patent
Estimating the term…
Abstract
The image processing apparatus executes predetermined image processing on image data obtained by photoelectrically reading an image photographed on a photographic film through a photographic lens of a camera, and thus obtains the image data for output. The apparatus comprises a unit for obtaining a characteristic of the photographic lens, a unit for developing the characteristic of the photographic lens into a dipping quantity corresponding to a position of the image, and a unit for compensating a marginal light quantity of the image by use of the dipping quantity. The apparatus is capable of compensating a decrease in light quantity of an area peripheral to the image even when the image is photographed through a low-performance lens, and obtaining a high quality image with stability without any darkened peripheral area.
Claims16
An image processing apparatus for executing predetermined image processing on image data obtained by photoelectrically reading an image photographed on a photographic film through a photographic lens of a camera, and thus obtaining the image data for output, comprising:
- means for obtaining a characteristic of said photographic lens;
- means for developing the characteristic of said photographic lens into a dipping quantity corresponding to a position of the image;
- means for calculating a compensation light quantity by multiplying said dipping quantity by a predetermined compensation intensity indicating a degree to which a marginal light quantity is compensated;
- and
- means for compensating said marginal light quantity of the image by use of the thus calculated compensation light quantity.
A method of processing image data obtained by photoelectrically reading an image photographed on a film through a photographic lens of a camera, said method comprising the steps of:
- obtaining a characteristic of a photographic lens;
- developing the characteristic of said photographic lens into a dipping quantity corresponding to a position of said image;
- calculating a compensation light quantity by multiplying said dipping quantity by a predetermined compensation intensity indicating a degree to which a marginal light quantity is compensated;
- and
- compensating the marginal light quantity of the image by use of the thus calculated compensation light quantity.
Dependencies are inferred from the claim text.