摘要:
In order to provide an edge emphasis technique that can eliminate image deterioration of a digital image, an image processing apparatus includes a region setting unit which sets a region including a pixel of interest, a brightness value derivation unit which derives brightness values of the pixels, a first derivative derivation unit which derives first derivatives of the brightness values derived by the brightness value derivation unit, an edge direction determination unit which determines an edge direction of brightness at a position of the pixel of interest based on the results of the first derivatives, a range determination unit which determines a range, and a replacement unit which replaces the pixel value of the pixel of interest.
摘要:
In order to provide an edge emphasis technique that can eliminate image deterioration of a digital image, an image processing apparatus includes a region setting unit which sets a region including a pixel of interest, a brightness value derivation unit which derives brightness values of the pixels, a first derivative derivation unit which derives first derivatives of the brightness values derived by the brightness value derivation unit, an edge direction determination unit which determines an edge direction of brightness at a position of the pixel of interest based on the results of the first derivatives, a range determination unit which determines a range, and a replacement unit which replaces the pixel value of the pixel of interest.
摘要:
A transfer method for transferring data between a digital still camera and a printer in direct communication with each other. The digital still camera stores an image file of an input image and a conversion file including conversion information for carrying out color conversion in a preset color space common to both the digital still camera and the printer. The method includes a first transfer step of transferring from the digital still camera to the printer the conversion file and a second transfer step of transferring the image file from the digital still camera to the printer. The printer carries out color conversion of and outputs the image of the image file transferred in the second transfer step using the conversion information included in the conversion file transferred in the first transfer step.
摘要:
A recording apparatus comprises a writing unit adapted to write data on a recording medium, a selection unit adapted to select data to be written on the recording medium from a storage medium configured to store a plurality of data, and a display control unit adapted to cause a display device to display a display screen concerning printing before the data selected by said selection unit is copied from the storage medium onto the recording medium, wherein said display control unit causes the display unit to display the display screen if there is a restriction on the number of times of copying of the data.
摘要:
There is disclosed an image processing apparatus which determines an attribute of an image including a pixel to be processed. An image area having a predetermined size including the pixel to be processed is extracted (S701). A variation related to the image area is calculated based on pixel values included in the image area (S705). Pixels in the image area are converted into N-ary data (ternary data or higher) in accordance with the calculated variation (S709). The attribute of the pixel to be processed is determined by analyzing the N-ary data as a result of the N-ary conversion (S711).
摘要:
In order to eliminate image deterioration based on the characteristics of an output device upon execution of edge emphasis processing, an image processing apparatus includes a setting unit which sets a print characteristic on the print medium, a region setting unit which sets a region, a brightness value derivation unit which derives brightness values, a first derivative derivation which derives first derivatives of the brightness values, an edge direction determination unit which determines an edge direction of brightness, an emphasis level determination unit which determines an emphasis level of a pixel value based on the first derivatives, and a replacement unit which calculates second derivatives of brightness values and replaces a pixel value of a pixel of interest based on the sign of the second derivative.
摘要:
An image correction process that suppresses image deterioration in a printed image is provided. An image correction processing apparatus includes an area setting unit which sets an area comprising a plurality of pixels including an interest pixel, a first correction strength setting unit which adaptively sets a first correction strength for at least the interest pixel in the area based on the number of changes and the changing amount, a first correction unit which executes image correction for a pixel, for which the first correction strength is set, by the first correction strength, a second correction strength setting unit which adaptively sets a second correction strength for at least the interest pixel in the area based on the number of changes and the changing amount, and a second correction unit which executes image correction for a pixel, for which the first correction strength is set, by the second correction strength.
摘要:
A recording apparatus comprises a writing unit adapted to write data on a recording medium, a selection unit adapted to select data to be written on the recording medium from a storage medium configured to store a plurality of data, and a display control unit adapted to cause a display device to display a display screen concerning printing before the data selected by said selection unit is copied from the storage medium onto the recording medium, wherein said display control unit causes the display unit to display the display screen if there is a restriction on the number of times of copying of the data.
摘要:
Upon outputting halftone image data to an output device, density transformation is prevalently done to improve image quality. Density transformation corresponds to linear gamma correction, and cannot correct any color fog and the like of a photo image. Hence, lightness/color difference information of halftone image data is acquired on the basis of low-frequency components of frequency data obtained by transforming halftone image data into spatial frequency components, and a lightness/color difference transform amount of the halftone image data is set on the basis of the acquired lightness/color difference information.
摘要:
Upon outputting halftone image data to an output device, density transformation is prevalently performed to improve image quality. Density transformation corresponds to linear gamma correction, and cannot correct for color fog and the like that may occur in a photo image. Hence, lightness and color-difference information of halftone image data is acquired on the basis of low-frequency components of frequency data obtained by transforming halftone image data into spatial frequency components, and a lightness and color-difference transform amount of the halftone image data is set on the basis of the acquired lightness and color-difference information.