System for generating thermographic images using thermographic signal reconstruction
First Claim
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1. A method of compiling thermographic data, comprising the steps of:
- A) using a thermographic camera to obtain a thermographic image data indicative of a monotonically changing, thermal characteristic of a specimen,B) using an image processor to sequence the thermographic image data or a surrogate of the thermographic image data into a plurality of time based, thermographic image data frames,C) categorizing, for each frame, a frequency distribution of frame pixels, wherein each pixel is encoded with a thermographic image data value or a surrogate of a thermographic image data value,D) compiling, from two or more frames, a collection of the frequency distributions categorized in step C).
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Abstract
A method for compiling thermographic data including obtaining data indicative of a monotonically changing characteristic of a specimen, sequencing the data or a surrogate of the data into a plurality of groups, categorizing, within each group, the frequency distribution of an attribute of the data or an attribute of said surrogate data, and compiling, from one or more groups, a collection of two or more of the frequency distributions.
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Citations
25 Claims
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1. A method of compiling thermographic data, comprising the steps of:
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A) using a thermographic camera to obtain a thermographic image data indicative of a monotonically changing, thermal characteristic of a specimen, B) using an image processor to sequence the thermographic image data or a surrogate of the thermographic image data into a plurality of time based, thermographic image data frames, C) categorizing, for each frame, a frequency distribution of frame pixels, wherein each pixel is encoded with a thermographic image data value or a surrogate of a thermographic image data value, D) compiling, from two or more frames, a collection of the frequency distributions categorized in step C). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of compiling thermographic data, comprising the steps of:
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A) using an infrared camera to capture, at two or more distinct times (ta, tb, . . . t2), two or more respectively associated frames (framea, frameb, . . . framez) of thermographic data of a sample specimen, wherein the thermographic data is indicative of a monotonically changing, thermal characteristic of the sample specimen; B) using an image processor to sequence the frames of thermographic data into a series of histograms (hista, histb, . . . histz) wherein each histogram is respectively associated with a frame (framea, frameb, . . . framez) of thermographic data; and C) compiling two or more of the of histograms to form a thermographic fingerprint of the sample specimen. - View Dependent Claims (17, 18, 19, 20, 21)
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22. A method of compiling thermographic data, comprising the steps of:
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A) exposing a specimen to an external thermal excitation event; B) using an infrared camera to capture, over a first period of time, thermographic image data of a the specimen, wherein the thermographic image data is indicative of a monotonically changing, time based thermal characteristic of the specimen in response to the thermal event; C) using an image processor to sequence the thermographic image data of the specimen into a time series of frequency distributions wherein each frequency distribution in said series of frequency distributions is respectively associated with a portion of the thermographic image data; and D) compiling the series of frequency distributions to form a thermographic fingerprint of the specimen. - View Dependent Claims (23, 24, 25)
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Specification