Patent US7466858B2 successfully refreshed from Google Patents.
US7466858B2
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Methods for slide image classification
Assignee: Fujifilm Business Innovation Corp
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Filing: 2005-04-28
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Granted: 2008-12-16
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Expires: 2025-04-28
Abstract
Abstract A method of classifying images as slide images or non-slide images can be done by capturing a video stream, analyzing an image of the video stream and determining whether the image is a slide image. The analyzing can be based on text height and/or edge region(s) of the image.
Inventors
- 👤 Laurent Denoue
- 👤 Matthew Cooper
- 👤 David Hillbert
- 👤 John Adcock
- 👤 Daniel Billsus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:46
CPC Classifications
G; G06; G06V; G06V20/00; G06V20/40
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
74 words
A device comprising: a processor to analyze images of a video stream, wherein a height of text located in at least one predetermined edge region of the video stream is analyzed in the images to classify the images of the video stream as being slide images or non-slide images, wherein the edge region comprises the outermost north, east, west or south borders of the video stream; and a memory to store the slide images.
Claim 2
Independent Claim
74 words
A device comprising: a processor to analyze images of a video stream, wherein a height of text located in at least one predetermined edge region of the video stream is analyzed in the images to classify the images of the video stream as being slide images or non-slide images, wherein the edge region comprises the outermost north, east, west or south borders of the video stream; and a memory to store the slide images.
Claim 3
Dependent Claim
26 words
The device of claim 1 , wherein the processor performs optical character recognition on the images to return bounded boxes identifying the text in the images.
Claim 4
Dependent Claim
24 words
The device of claim 1 , wherein the processor compares an average height of text in an image of the images to a threshold.
Claim 5
Dependent Claim
24 words
The device of claim 3 , wherein the processor determines images whose average text size is greater than the threshold to be slide images.
Claim 6
Dependent Claim
17 words
The device of claim 1 , wherein the processor samples the video stream to obtain the images.
Claim 7
Dependent Claim
39 words
The device of claim 1 , wherein the processor creates histograms indicating the bounding box sizes of the text of the images and does a nearest neighbor classification on the histograms to determine whether the images are slide images.
Claim 8
Dependent Claim
26 words
The device of claim 1 , wherein the at least one predetermined edge region of the video stream includes a predetermined number of rows or columns.
Claim 9
Dependent Claim
15 words
The device of claim 1 , wherein a plurality of predetermined edge regions are analyzed.
Claim 10
Dependent Claim
23 words
The device of claim 1 , wherein luminance values of the at least one predetermined edge region of the video stream are examined.
Claim 11
Dependent Claim
17 words
The device of claim 1 , wherein the processor samples the video stream to obtain the images.
Claim 12
Dependent Claim
57 words
The device of claim 1 , wherein the processor uses text height in any region of the video stream to determine a first set of slide images, and uses characteristics of at least one predetermined edge region around the outer border of the first set of slide images to evaluate remaining images to classify additional slide images.
Claim 13
Dependent Claim
75 words
A computer-readable medium having a program of instructions stored thereon that performs a function, the function comprising the steps of: capturing an input video stream; and analyzing a height of text located in at least one predetermined edge region of the video stream to classify the images of the video stream as being slide images or non-slide images, wherein the edge region comprises the outermost north, east, west or south borders of the video stream.
Claim 14
Dependent Claim
75 words
A computer-readable medium having a program of instructions stored thereon that performs a function, the function comprising the steps of: capturing an input video stream; and analyzing a height of text located in at least one predetermined edge region of the video stream to classify the images of the video stream as being slide images or non-slide images, wherein the edge region comprises the outermost north, east, west or south borders of the video stream.
Claim 15
Dependent Claim
20 words
The program of claim 12 , wherein the average height of text in the image is compared to a threshold.
Claim 16
Independent Claim
74 words
A method for classifying images of a video stream as being slide images and non-slide images, the method comprising: capturing an input video stream; and analyzing a height of text located in at least one predetermined edge region of the video stream to classify the images of the video stream as being slide images or non-slide images, wherein the edge region comprises the outermost north, east, west or south borders of the video stream.
Claim 17
Independent Claim
74 words
A method for classifying images of a video stream as being slide images and non-slide images, the method comprising: capturing an input video stream; and analyzing a height of text located in at least one predetermined edge region of the video stream to classify the images of the video stream as being slide images or non-slide images, wherein the edge region comprises the outermost north, east, west or south borders of the video stream.
Claim 18
Dependent Claim
25 words
The method of claim 14 , further comprising: performing optical character recognition on the images to return bounded boxes identifying the text in the images.
Claim 19
Dependent Claim
23 words
The method of claim 14 , further comprising: comparing an average height of text in an image of the images to a threshold.
Claim 20
Dependent Claim
23 words
The method of claim 16 , further comprising: determining images whose average text size is greater than the threshold to be slide images.
Claim 21
Dependent Claim
16 words
The method of claim 14 , further comprising: sampling the video stream to obtain the images.
Claim 22
Dependent Claim
38 words
The method of claim 14 , further comprising: creating histograms indicating the bounding box sizes of the text of the images; and performing a nearest neighbor classification on the histograms to determine whether the images are slide images.
Claim 23
Dependent Claim
26 words
The method of claim 14 , wherein the at least one predetermined edge region of the video steam includes a predetermined number of rows or columns.
Claim 24
Dependent Claim
15 words
The method of claim 14 , wherein a plurality of predetermined edge regions are analyzed.
Claim 25
Dependent Claim
24 words
The method of claim 14 , further comprising: examining the luminance values of the at least one predetermined edge region of the video stream.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2011-12-16 | 2012-06-16 | 2012-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2015-12-16 | 2016-06-16 | 2016-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2019-12-16 | 2020-06-16 | 2020-12-16 | $7700.00 | Window Closed / Lapsed |