Method and apparatus for reducing printing artifacts of stitched images
AssigneePerkinElmer, Inc.
InventorsJoseph P. Donahue, William A. Hart
Life of this patent
Estimating the term…
Abstract
A method and apparatus for eliminating artifacts in images formed using more than one image segment. A buffer region associated with two adjacent image segments is defined wherein the intensity levels of the pixels are attenuated. When image segments substantially overlap in the buffer region, the intensity in the buffer region substantially sums to full scale. The intensity of the pixels in the buffer region is preferably attenuated using a device to modulate the intensity of the source of radiation.
Claims36
A method for combining at least two adjacent image segments to form a larger composite image comprising:
- establishing a first region in which a first image segment will be printed;
- establishing a second region in which a second image segment will be printed;
- defining a buffer region associated with both image segments;
- printing the first image segment and the buffer region;
- modifying the intensity in the buffer region by a first ramp value;
- printing the second image segment and the buffer region;
- and
- modifying the intensity in the buffer region by a second ramp value.
A method for creating a buffer region for a composite image comprising:
- defining the region as a number of pixels extending into any two adjacent image segments;
- defining a first rate at which the intensity of the pixels in the buffer region will be attenuated across the region in printing a first image segment;
- and
- defining a second rate at which the intensity of the pixels in the buffer region will be attenuated across the region in printing a second image segment.
A printing system comprising:
- a pixel counter;
- an integrator which outputs an intensity value from an input ramp rate and an initial value;
- a multiplier which converts digital pixel data and an intensity value into analog data;
- and an intensity modulator.
A printing system comprising:
- means for counting pixels;
- means for computing an intensity value from a ramp rate and an initial value;
- means for converting an intensity value and digital pixel data into analog data;
- and means for modulating intensity.
Dependencies are inferred from the claim text.