SYSTEM AND METHOD FOR ANALYSIS OF LIGHT-MATTER INTERACTION BASED ON SPECTRAL CONVOLUTION

• US 20090245603A1
• Filed: 01/07/2009
• Published: 10/01/2009
• Est. Priority Date: 01/05/2007
• Status: Abandoned Application

• Current Assignee: mySkin Inc.
• Original Assignee: mySkin Inc.
• Inventors: Koruga, Djuro, Tomic, Alexandar
• Application Number:
  US12/350,164
• Publication Number:
  US 20090245603A1
• Time in Patent Office: Days
• US Class Current: 382/128
• CPC Class Codes: A45D 2044/007 Devices for determining the condition of hair or skin or for selecting the appropriate cosmetic or hair treatment
• CPC Class Codes: A45D 44/00 Other cosmetic or toiletry articles, e.g. for hairdressers' rooms
• CPC Class Codes: A61B 5/0088 for oral or dental tissue
• CPC Class Codes: A61B 5/0091 for mammography
• CPC Class Codes: A61B 5/411 Detecting or monitoring allergy or intolerance reactions to an allergenic agent or substance
• CPC Class Codes: A61B 5/415 the glands, e.g. tonsils, adenoids or thymus
• CPC Class Codes: A61B 5/442 Evaluating skin mechanical properties, e.g. elasticity, hardness, texture, wrinkle assessment
• CPC Class Codes: A61B 5/443 Evaluating skin constituents, e.g. elastin, melanin, water
• CPC Class Codes: A61B 5/444 Evaluating skin marks, e.g. mole, nevi, tumour, scar
• CPC Class Codes: A61B 5/445 Evaluating skin irritation or skin trauma, e.g. rash, eczema, wound, bed sore
• CPC Class Codes: G06F 18/245 relating to the decision surface
• CPC Class Codes: G06T 7/0012 Biomedical image inspection
• CPC Class Codes: G06T 7/90 Determination of colour characteristics

Abstract

In embodiments of the present invention, systems and methods of a method and algorithm for creating a unique spectral fingerprint are based on the convolution of RGB color channel spectral plots generated from digital images that have captured single and/or multi-wavelength light-matter interaction.

Claims

1-80. -80. (canceled)

81. A method for generating a dermal spectral signature, the method comprising:

convoluting data from a first image captured in incident diffuse white light, wherein the data relate to reflected and/or re-emitted polarized or white light and a second image captured in incident polarized light, wherein the data relate to a reflected and/or re-emitted polarized light to obtain a dermal spectral signature;

identifying the minimum and maximum intensity positions of the dermal spectral signature, wherein identifying comprises comparing a dermal spectral signature component (R-B)(W-P) with a component (R-B)W for the incident white light spectral signature; and

determining a distance between the minimum and the maximum intensity positions in the components (R-B)(W-P) and (R-B)W for generating a numerical skin state output.

82. The method of claim 81, wherein the white light comprises three spectral intervals including a width less than 100 nanometers.

83. The method of claim 82, wherein the three spectral intervals pertain to red, green, and blue (RGB) colors.

84. The method of claim 83, wherein the three spectral intervals provide a natural white light sensation to a human eye.

86. The method of claim 81, wherein the dermal spectral signature further comprises at least one of a White Red component (WR), a White Blue component (WB), a reflected and/or re-emitted Polarized Blue component (PB) and a reflected and/or re-emitted Polarized Red component (PR).

87. The method of claim 81, wherein the numerical skin state output correlates with a medical standard.

88. The method of claim 81, further comprising a spectral convolution scheme wherein multiple combinations of subtraction of blue spectrum from red spectrum, in white light and polarized white light are determined, wherein the spectral interval is expressed in a wavelength scale interval of 100 nanometers to 300 nanometers.

85. (canceled)

89-124. -124. (canceled)

125. A machine readable medium, the machine readable medium having program instructions stored thereon executable by a processing unit, the program instructions comprising the steps of:

capturing an image of a material illuminated with incident non-angled white light and an image of a material illuminated with incident angled white light;

generating a normalized red color channel histogram and a normalized blue color channel histogram for a reflected and/or emitted light in each image;

correlating the normalized red color channel histograms and normalized blue color channel histograms to a wavelength scale to obtain a red color channel spectral plot for each red color channel histogram and a blue color channel spectral plot for each blue color channel histogram; and

convoluting the red color channel spectral plots and blue color channel spectral plots by;

a) subtracting the red color channel spectral plot for angled light from the red color channel spectral plot for non-angled light to generate a red normalized, composite color channel spectral plot of a specific wavelength scale;

b) subtracting the blue color channel spectral plot for angled light from the blue color channel spectral plot for non-angled light to generate a blue normalized, composite color channel spectral plot of a specific wavelength scale; and

c) subtracting the normalized, composite blue channel spectral plot from the normalized, composite red channel spectral plot to generate a spectral signature for the material.

126. The medium of claim 125, further comprising subtracting a the normalized blue color channel spectral plot for the incident light from the normalized, composite blue channel spectral plot for the material before generating the spectral signature for the material.

127. The medium of claim 125, further comprising subtracting the normalized red color channel spectral plot for the incident light from the normalized, composite red channel spectral plot for the material before generating the spectral signature for the material.

128. The medium of claim 125, wherein the illumination source is positioned to direct light at a selected angle alpha.

129. The medium of claim 125, wherein varying alpha varies the depth of the measurement in the material.

130. The medium of claim 125, wherein the unit scale of the spectral signature is a difference of wavelength.

131. The medium of claim 125, wherein the material is inorganic matter.

132. The medium of claim 125, wherein the material is organic matter.

133. The medium of claim 125, wherein the spectral signature is analyzed for at least one of number of peaks and troughs, amplitude and shape of peaks, and intermediate structures and patterns.

134. The medium of claim 125, wherein the spectral signature is analyzed for metal composition, identification, purity, and strength.

135. The medium of claim 125, wherein the spectral signature is analyzed for water quality, composition, and purity.

136. The medium of claim 125, wherein elements of the spectral signature are tagged and tracked over time in order to track changes in the characteristics of the material.

137. The medium of claim 125, wherein the spectral signature is analyzed to at least one of measure, track, or monitor a skin state.

143. The medium of claim 125, wherein the spectral signature is fed into a recommendation engine of a skin care system to provide feedback and modifications to aspects of a regimen.

144. The medium of claim 125, wherein the wavelength position of ideal blue in Maxwell'"'"'s color triangle is aligned with the wavelength position of ideal red in Maxwell'"'"'s color triangle when convoluting the composite spectral plots to obtain the spectral signature.

145. The medium of claim 125 wherein a spectral signature is calculated for the incident light and is subtracted from the spectral signature generated from the reflected and/or emitted light.

146. The medium of claim 145, wherein only a polarized component is used when the incident light spectral signature is subtracted.

147. The medium of claim 145, wherein only the white component is used when the incident light spectral signature is subtracted.

148. The medium of claim 145, wherein both a polarized component and non-polarized components are used to subtract from the incident light spectral signature.

138-142. -142. (canceled)

149-196. -196. (canceled)