Animal carcase analysis

• US 7,110,572 B1
• Filed: 09/20/2000
• Issued: 09/19/2006
• Est. Priority Date: 09/20/1999
• Status: Expired due to Fees

• Current Assignee: RMS Research Management Systems USA Incorporated
• Original Assignee: RMS Research Management Systems USA Incorporated
• Inventors: Benn, Alan
• Primary Examiner(s): Mehta, Bhavesh M.
• Assistant Examiner(s): Seth, Manav
• Application Number:
  US10/088,924
• Time in Patent Office: 2,190 Days
• Field of Search: 382/110, 382162-167, 382/170, 345589-605, 358/538, 348/453
• US Class Current: 382/110
• CPC Class Codes: G01B 11/024 by means of diode-array scanning
• CPC Class Codes: G01N 21/25 Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
• CPC Class Codes: G01N 33/12 Meat; fish
• CPC Class Codes: G06T 2207/30128 Food products
• CPC Class Codes: G06T 7/60 Analysis of geometric attributes
• CPC Class Codes: G06T 7/90 Determination of colour characteristics

Abstract

The process for analyzing an ovine animal carcase comprises capturing an image of a dorsal view to generate color image data for the carcase (10). Predetermined anatomical points (21–24) of the carcase are identified to then derive dimensional measurements for the carcase. Also characterizing parameters such as yield and fat depth of the carcase are derived by processing color data included in the captured image data in conjunction with the derived dimensional measurements. The color data processed are the color data for predetermined selected surface areas, especially the chump, the loin and the shoulder areas (30–32) of the carcase (10) known or determined to have significant correlation to the characterizing parameter related to fatness. Desirably the tail (17) of the animal carcase is identified and its width determined since this is useful as a variable in a carcase yield predictive equation. The color data comprises average RGB values representing red, green and blue color components which are intensity normalized color values.

Claims

1. A process for analysing an ovine animal carcase which includes the steps of:

providing an image capture means for capturing image data relating to an ovine animal carcase,

presenting an ovine animal carcase to the image capture means, the carcase being positioned with the dorsal view of the carcase presented directly to the image capture means,

capturing image data for the dorsal view of the carcase by the image capture means, processing the image data so as to automatically identify predetermined anatomical points of the carcase,

deriving dimensional measurements for the carcase by using the anatomical points identified, and

deriving at lease one characterising parameter related to fatness of the carcase by processing colour data included in the captured image data in conjunction with the derived dimensional measurements, the colour data processed being the colour data for at least one predetermined selected surface area of the carcase known or determined to have a significant correlation to the characterising parameter related to fatness, wherein the process includes the further step of processing the image data to identify the tail of the ovine animal carcase, the identification of the tail comprising identification of lateral edges of the tail which are delineated in the captured image by generally linear darker areas extending lengthwise relative to the spine of the carcase, the process including the further step of determining the width of the tail between the lateral edges, and wherein the step of deriving at least one characterising parameter includes deriving a parameter related to the predicted yield of the carcase using the width of the tail as a variable in a carcase yield predictive equation.

2. A process as claimed in claim 1 wherein the step of processing colour data comprises measuring the average RGB values representing red, green and blue color components within said at least one predetermined selected surface area.

3. A process as claimed in claimed in claim 2 wherein the RGB values are intensity normalised colour values substantially independent of light intensity.

4. A process for analysing an ovine animal carcase which includes the steps of:

providing an image capture means for capturing image data relating to an ovine animal carcase,

presenting an ovine animal carcase to the image capture means, the carcase being positioned with the dorsal view of the carcase presented directly to the image capture means,

capturing image data for the dorsal view of the carcase by the image capture means,

processing the image data so as to automatically identify predetermined anatomical points of the carcase,

deriving dimensional measurements for the carcase by using the anatomical points identified, and

deriving at least one characterising parameter related to fatness of the carcase by processing colour data included in the captured image data in conjunction with the derived dimensional measurements, the colour data processed being the colour data for at least one predetermined selected surface area of the carcase known or determined to have a significant correlation to the characterising parameter related to fatness, the step of processing colour data comprising measuring the average RGB values representing red, green and blue colour components within said at least one predetermined selected surface area,

wherein there are multiple predetermined selected surface areas of the ovine animal carcase for which colour data is processed, the multiple predetermined surface areas comprising areas which are automatically positioned relative to the predetermined anatomical points and which generally coincide with the chump, the loin and the shoulder areas of the ovine animal carcase used in standardised manual carcase grading systems for evaluating carcase fatness.

5. A process as claimed in claim 4 wherein the multiple surface areas are arranged in respective pairs locates symmetrically on opposite sides of the spine of the carcase, the processing of the coloured data including averaging of colour values for each laterally spaced pair of surface areas.

6. A process as claimed in claim 5 wherein the processing of colour data for the respective pairs of surface areas includes comparing the average colour values of each surface area with its respective counterpart of the respective pair and generating an alarm or error signal if the average colour values for the two members of any pair vary significant from each other.

7. A process for analysing an animal carcase which includes the steps of:

providing an image capture means for capturing image data relating to an animal carcase, presenting an animal carcase to the image capture means, the carcase being positioned with dorsal view of the carcase presented directly to the image capture means, capturing image data for the dorsal view of the carcase by the image capture means, processing the image data so as to automatically identify predetermined anatomical points of the carcase,

deriving at least one characterising parameter related to fatness of the carcase by processing colour data included in the captured image date in conjunction with the derived dimensional measurements, the colour data processed being the colour data for at least one predetermined selected surface area of the carcase known or determined to have a significant correlation to the characterising parameter related to fatness, the step of processing colour data comprising measuring the average RGB values representing red, green and blue color components within said at least one predetermined selected surface area,

wherein the step of processing the colour data includes analysing the rate of change of RGB values in a line profile across the image of the carcase transverse to the longitudinal line of the spine and wherein the step of deriving a characterising parameter includes solving a predictive equation for a measure of fatness of the carcase in which the rate of change of the RGB values is a variable in that predictive equation.

8. A process for analysing an animal carcase which includes the steps of:

providing an image capture means for capturing image data relating to an animal carcase, presenting an animal carcase to the image capture means, the carcase being positioned with the dorsal view of the carcase presented directly to the image capture means, capturing image data for the dorsal view of the carcase by the image capture means, processing the image data so as to automatically identify predetermined anatomical points of the carcase,

deriving dimensional measurements for the carcase by using the anatomical points identified, and

deriving at least one characterising parameter related to fatness of the carcase by processing colour data included in the captured image data in conjunction with the derived dimensional measurements, the colour data processed being the colour data for at least one predetermined selected surface area of the carcase known or determined to have a significant correlation to the characterising parameter related to fatness, the step of processing colour data comprises measuring the average RGB values representing red, green and blue colour components within said at least one predetermined selected surface area,

wherein the step of deriving a characterising parameter related to fatness of the carcase includes performing statistical analyses of multiple carcases to provide correlations between average RGB values of said at least predetermined selected surface area and carcase fatness and using these correlations to develop a predictive equation for carcase fatness in which the average RGB values are variables in the predictive equation.

9. A process as claimed in claim 8 wherein the parameter related to fatness of the carcase is selected from lean meat yield and fat thickness.