EP0654143A1 - Procede pour determiner le type et la repartition des tissus dans des organismes vivants - Google Patents

Procede pour determiner le type et la repartition des tissus dans des organismes vivants

Info

Publication number
EP0654143A1
EP0654143A1 EP93918091A EP93918091A EP0654143A1 EP 0654143 A1 EP0654143 A1 EP 0654143A1 EP 93918091 A EP93918091 A EP 93918091A EP 93918091 A EP93918091 A EP 93918091A EP 0654143 A1 EP0654143 A1 EP 0654143A1
Authority
EP
European Patent Office
Prior art keywords
camera
light
situated
organism
computer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP93918091A
Other languages
German (de)
English (en)
Inventor
Torbjörn HALLGREN
Leif Bjerkan
Bernt Brandal
Noralf Ryen
Nils Harald BJÖRSHOL
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sinvent AS
Original Assignee
Sinvent AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sinvent AS filed Critical Sinvent AS
Publication of EP0654143A1 publication Critical patent/EP0654143A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A22—BUTCHERING; MEAT TREATMENT; PROCESSING POULTRY OR FISH
    • A22C—PROCESSING MEAT, POULTRY, OR FISH
    • A22C29/00—Processing shellfish or bivalves, e.g. oysters, lobsters; Devices therefor, e.g. claw locks, claw crushers, grading devices; Processing lines
    • A22C29/005—Grading or classifying shellfish or bivalves
    • A—HUMAN NECESSITIES
    • A22—BUTCHERING; MEAT TREATMENT; PROCESSING POULTRY OR FISH
    • A22C—PROCESSING MEAT, POULTRY, OR FISH
    • A22C29/00—Processing shellfish or bivalves, e.g. oysters, lobsters; Devices therefor, e.g. claw locks, claw crushers, grading devices; Processing lines
    • A22C29/02—Processing shrimps, lobsters or the like ; Methods or machines for the shelling of shellfish
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/02—Food
    • G01N33/12—Meat; Fish

Definitions

  • the present invention relates to a method for determining the kind and distribution of tissue in living organisms, as stated in the introductory part of claim 1.
  • X-rays For living material, it is known to use X-rays and ultra sound. X-rays have the disadvantage that extensive shading must be put in place. For ultra sound difficulties arise due to the interferance noise in the method. The method is also poor in differentiating between tissues having the same density.
  • NIT Near Infrared Transmision
  • the influence will vary with the wavelength in a way which is specific for the material that is measured.
  • the part of the light which shines through the sample is registered and the result is processed in a computer.
  • the measuring results are compared with stored comparative values for matter to be measured.
  • the comparative values are determined by conducting measurements in a great number of samples which then are analysed chemically.
  • the method is an alternative to routine chemical analysis. The method is well suited for homogeneous material but can not be used in a section where tissues of different kinds are present. Therefore, it can also not be used for living organisms.
  • crabs For some animals, e.g. crabs, it is preferred to be able to evaluate the food content before slaughtering. Today this is performed as a rough estimate and with a great deal of uncertainity. It is of interest to be able to take crabs which are not approved, back to feeding.
  • Fig. la discloses the principle for equipment for conducting a method according to present invention
  • Fig. lb discloses the principle of alternative equipment for conducting a method according to present invention
  • Fig. 2 shows an object which is to be measured using a method according to present invention
  • Fig. 3 shows an example of arranging a light source for use in connection with present invention
  • Fig. 4 shows an example of an arrangement of a video camera for use in connection with present invention.
  • Fig. la shows an arrangement for measuring living organisms according to present invention.
  • a crab 1 is situated at a transparent plate 6, and a light source 2 is placed under the plate.
  • the light passing through the crab is regisered by a video camera 3.
  • the images from the camera are digitized and processed using a computer 4.
  • the light source 2 can be a halogen incandescent lamp which emits strong radiation in the wavelength range 400 to 2000 nm.
  • a filter 5 can be situated between the object 1 and the camera 3, the filter being exchangeable thereby making it possible to choose light in different wavelength bands.
  • the transparent plate 6 can be a clear glass plate or a translucent or dim glass plate. If a clear glass plate is used, light from the light source 2 is spread e.g. using the focus collimator 7 or a spreading lens.
  • the dim glass plate or the collimator helps spreading or diffuse the light so that light source 2 is "hidden" to the camera. Another way in "hiding" the light source, is to use an objective having so narrow focus that the crab itself covers the lightsource.
  • the plate 6 is a type of glass which does not loose much transparency in the wave ⁇ length area in question. At suitable time intervals, the plate should be washed with water, and this water should be swept away. In the vicinity of the object 1, one or more gray references 8 may be placed, such as a gray filter which is trans- illuminated.
  • the transparent plate can be exchanged by a grid made from a non-refracting and non-reflecting material.
  • This grid can be a conveyor, so that mechanisms for transporting the crab to and from the glass plate can be avoided. Measurements are conducted after the crab has been drugged, so that it would lies calmly on the glass plate 6. This can be done by cooling, e.g. using carbon ice.
  • the light from the light source 2 is switched on, and a candle image is registered by the camera 3.
  • the filter 5 can be exchanged and a new measurement performed. One or more measurements can be performed. When a plurality of measurements are done, the measurements are taken in different wavelength ranges.
  • the first measurement may e.g.
  • Fig. la the crab lies with its upper side up (directed to the camera).
  • Fig. lb shows a variant of the measuring arrangement. As an alternative to drugging the crab, it can be put on its back during measurement.
  • Fig. 3 illustrates a possible way of arranging the light source.
  • the light source 2 itself is situated within a container 21.
  • the light emits through an aperture 22, having a size which can be selected for the size of the object being measured, so that no aperture is visible from the camera.
  • the plane 23 in which the aperture is situated is extended in area so that it covers the whole visible area of the camera.
  • the plane is arranged with a light trap 24 so that a dark background is provided.
  • a collimator 7 or a spreading lens can be situated in the aperture opening.
  • Fig. 4 shows a possible way to arrange the camera.
  • the camera 3 is situated within a container 31 which is arranged so that light which enters cannot exit. In this way undesired, reflected light on the upper side of the crab is avoided.
  • the container is black inside. It has a flange 32 with a light trap 34. Also in the bottom, a light trap 33 is situated.
  • the transparent glass plate will lie directly on the flange 32. The light trap 34 is then not necessary. However, if the measurement arrangement in Fig. la is used, the light trap 34 will hinder reflection or spread of light on the upper side of the crab.
  • the method of measurment is that images are taken of the object 1.
  • the following quality determination is conducted in the computer 4 using n mearsuring values which among other things will show sex, size, transmission in different areas and form and shape of these areas.
  • the measured values are compared to previously stored comparision values in a computer. In this way, type and distribution of tissue in the object is determined.
  • the stored calibrated datas is provided by expert evaluation of a sufficiently great number of samples of crabs. The evaluation is done by opening the crabs after they have first been photographed and boiled.
  • Fig. 2 there is shown a drawing of a crab where interesting measuring regions are marked. The crab meat is most evident in regions 11. When the meat extends all the way out to the edges 17 of the shell, this is a sign that the crab is of good quality. In cases where this is a particularily high degree of filling, the breathing spaces 13 can also be partly filled. When the so called stomach 14 is of large size, which is not eatable, this is a sign of a low degree of filling.
  • the mid region of the crab contains the so called cage 15.
  • the roe of the female crab is situated around the cage and in the regions 11.
  • the sex of the crab is determined in the area 16.
  • the brown meat 12 also called the liver, is well visible and is measured for size and density. The lighter the brown meat is, the higher the quality. For female crabs areas 15 and 11 are measured for roe. Measurements should further be conducted in the edge area of the meat 17, and in the breathing spaces 13. If the brown meat 12 is chipped, this is a sign of the crab being poorly filled. Both the brown meat 12 and eggs in female crabs in the areas 15 org 11 have a greater absorption than the rest of the tissue.
  • an analysis can be conducted to determine the "filling grade" (content of food) of a crab. Determining the sex is done on the basis of the shape of the crab shell. The final quality determination is done by comparing the distribution of light absorbing tissue with distribution in the preclassified calibrated samples.
  • the crab is classified in a predetermined number of quality classes which are determined through the preclassifying calibrating samples.
  • an output of the computer may give a signal which indicates the determined class. This signal can be used for controlling an automat for transporting the crab from the glass plate to a collection site for this quality.
  • the method may also be used in connection with different measurements of the food content of crabs. In principle, it can be used in all materials where an invasive examination or analysis is not possible. What is specially discovered by using this method, is water against other materials, mainly organic tissue. But other kinds of substances having different absorption abilities can also be stated. It is necessary that the object has a certain transparency for visible and infrared light.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Zoology (AREA)
  • Wood Science & Technology (AREA)
  • Biochemistry (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Medicinal Chemistry (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

L'invention se rapporte à un procédé pour déterminer le type et la répartition des tissus dans des organismes vivants (1), et plus particulièrement la teneur en substances nutritives contenues par exemple dans des crabes. A cet effet, l'organisme (1) est placé entre une source lumineuse (2) de lumière visible et de lumière infrarouge et une caméra (3) reliée à un ordinateur (4). L'organisme (1) est exposé à contre-jour à la lumière visible et infrarouge, la caméra (3) enregistre cet éclairage à contre-jour et le résultat est analysé par l'ordinateur (4). La caméra (3) fait une prise en plan de l'objet dans une ou plusieurs plages de longueurs d'ondes, et les données dérivées de cette image ou de ces images sont analysées, notamment par comparaison des données décrivant les régions des images enregistrées avec les données correspondantes provenant des images d'objets correspondants de qualité connue. Sur la base de cette analyse, les objets sont triés en classes de qualité prédéterminée.
EP93918091A 1992-08-07 1993-08-04 Procede pour determiner le type et la repartition des tissus dans des organismes vivants Withdrawn EP0654143A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO923094A NO923094L (no) 1992-08-07 1992-08-07 Framgangsmaate for bestemmelse av arten av og distribusjonen av vevstyper i levende organismer, saerig matinnhold i f.eks krabber
NO923094 1992-08-07
PCT/NO1993/000122 WO1994003793A1 (fr) 1992-08-07 1993-08-04 Procede pour determiner le type et la repartition des tissus dans des organismes vivants

Publications (1)

Publication Number Publication Date
EP0654143A1 true EP0654143A1 (fr) 1995-05-24

Family

ID=19895352

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93918091A Withdrawn EP0654143A1 (fr) 1992-08-07 1993-08-04 Procede pour determiner le type et la repartition des tissus dans des organismes vivants

Country Status (3)

Country Link
EP (1) EP0654143A1 (fr)
NO (1) NO923094L (fr)
WO (1) WO1994003793A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5474085A (en) * 1994-02-24 1995-12-12 University Of Prince Edward Island Remote thermographic sensing of livestock
NL9500018A (nl) * 1995-01-04 1996-08-01 Proval Beheer B V Inrichting voor het door middel van straling bepalen van de hoedanigheid van doorstraalbare lichamen.
US6992771B2 (en) * 2001-11-28 2006-01-31 Battelle Memorial Institute Systems and techniques for detecting the presence of foreign material
IT1397406B1 (it) * 2009-06-25 2013-01-10 Consiglio Per La Ricerca E La Sperimentazione In Agricoltura C R A Apparato di riconoscimento di prodotti agroalimentari.
US10111411B2 (en) 2013-02-06 2018-10-30 Clearwater Seafoods Limited Partnership Imaging for determination of crustacean physical attributes

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4829184A (en) * 1984-06-25 1989-05-09 Nelson Robert S Reflective, transmissive high resolution imaging apparatus
CA1319134C (fr) * 1988-07-19 1993-06-15 Ernest M. Reimer Detection d'anomalies dans un materiau translucide par mirage
NL8802404A (nl) * 1988-09-30 1990-04-17 Meyn Bv Werkwijze en inrichting voor het door middel van doorstraling controleren van voedselprodukten.
SE460563B (sv) * 1988-10-19 1989-10-23 Lumetech As Saett att detektera mask i koett
DE3904675A1 (de) * 1989-02-16 1990-08-23 Telefunken Electronic Gmbh Verwendung einer optoelektronischen anordnung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9403793A1 *

Also Published As

Publication number Publication date
WO1994003793A1 (fr) 1994-02-17
NO923094D0 (no) 1992-08-07
NO923094L (no) 1994-02-08

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