Automated statistical self-calibrating detection and removal of blemishes in digital images based on multiple occurrences of dust in images
First Claim
1. A portable digital image acquisition device including a lens assembly, an image sensor, a processor, and a processor-readable medium having code embedded therein for programming the processor to perform a method of automatically correcting dust artifact within images acquired by the device, wherein the method comprises:
- (a) acquiring one or more original digital images with said digital acquisition device;
(b) determining probabilities that certain pixels correspond to dust artifact regions within said one or more images;
(c) associating probable dust artifact regions with one or more values of one or more extracted parameters relating to the lens assembly of the digital acquisition device when the one or more images were acquired;
(d) eliminating certain suspected dust artifact regions as having a probability below a first threshold value;
(e) forming a statistical dust map including mapped dust regions based on the determining, associating and eliminating; and
(f) correcting pixels corresponding to correlated dust artifact regions within same or different images, or both, based on the associated statistical dust map.
5 Assignments
0 Petitions
Accused Products
Abstract
A method automatically corrects dust artifact within images acquired by a system including a digital acquisition device including a lens assembly. Multiple original digital images are acquired with the digital acquisition device. Probabilities that certain pixels correspond to dust artifact regions within the images are determined based at least in part on a comparison of suspected dust artifact regions within two or more of the images. Probable dust artifact regions are associated with extracted parameter values relating to the lens assembly when the images were acquired. A statistical dust map is formed including mapped dust regions based on the determining and associating. Pixels corresponding to correlated dust artifact regions are corrected within further digitally-acquired images based on the associated statistical dust map.
-
Citations
23 Claims
-
1. A portable digital image acquisition device including a lens assembly, an image sensor, a processor, and a processor-readable medium having code embedded therein for programming the processor to perform a method of automatically correcting dust artifact within images acquired by the device, wherein the method comprises:
-
(a) acquiring one or more original digital images with said digital acquisition device; (b) determining probabilities that certain pixels correspond to dust artifact regions within said one or more images; (c) associating probable dust artifact regions with one or more values of one or more extracted parameters relating to the lens assembly of the digital acquisition device when the one or more images were acquired; (d) eliminating certain suspected dust artifact regions as having a probability below a first threshold value; (e) forming a statistical dust map including mapped dust regions based on the determining, associating and eliminating; and (f) correcting pixels corresponding to correlated dust artifact regions within same or different images, or both, based on the associated statistical dust map. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A portable digital image acquisition device including a lens assembly, an image sensor, a processor, and a processor-readable medium having code embedded therein for programming the processor to perform a method of automatically correcting dust artifact within images acquired by the device, wherein the method comprises:
-
(a) acquiring one or more original digital images with said digital acquisition device; (b) determining probabilities that certain pixels correspond to dust artifact regions within said one or more images; (c) associating probable dust artifact regions with one or more values of one or more extracted parameters relating to the lens assembly of the digital acquisition device when the one or more images were acquired; (d) forming a statistical dust map including mapped dust regions based on the determining and associating; (e) validating that one or more further digitally-acquired images have non-contradicting probability data that certain pixels correspond to dust artifact regions within prior to correcting pixels corresponding to correlated dust artifact regions based on the associated statistical dust map; and (f) correcting pixels corresponding to correlated dust artifact regions within same or different images, or both, based on the associated statistical dust map. - View Dependent Claims (11, 12, 13, 14)
-
-
15. A portable digital image acquisition device (hereinafter “
- portable device”
) including a lens assembly, an image sensor, a processor, and a processor-readable medium having code embedded therein for programming the processor to perform a method of automatically correcting dust artifact within images acquired by the device, wherein the method comprises;(a) acquiring one or more original digital images with said digital acquisition device; (b) determining probabilities that certain pixels correspond to dust artifact regions within said one or more images; (c) associating probable dust artifact regions with one or more values of one or more extracted parameters relating to the lens assembly of the digital acquisition device when the one or more images were acquired; (d) forming a statistical dust map including mapped dust regions based on the determining and associating; (e) sorting dust artifact distribution data within said dust map according to meta-data; and (f) correcting pixels corresponding to correlated dust artifact regions within same or different images, or both, based on the associated statistical dust map. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
- portable device”
Specification