application of ct scanning in (meat) industry · lars bager christensen [email protected] allan...
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Lars Bager Christensen
Application of
CT Scanning in (Meat) Industry
Accuracy in Biology
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Motivation - statistics of rigid anatomy
Geometric reference
Rigid structure
Design tool
Quantify anatomic variation
Motivation - statistics of yield
Use the right raw material
for a specific final product
Challenge:
Elastic structure
Benefits:
Product planning
Cost estimation
Controlling machines
Yield = Final product [kg]
Raw material [kg]
Volume Grading
Based on weight measurement
Objective & reproducible
Warm or chilled carcass
Wtotal = Vfat∙ βfat
+ Vmeat∙ βmeat
+ Vbone∙ βbone
Primal cutting
Real vs. virtual
Validation of cuts
Cutting into
Primals Ham Middle Shoulder
Mean difference -0.0023 -0.0027 0.005
Rel. mean difference -0.71% -0.73% 1.6%
Standard deviation 0.0028 0.0083 0.0068
•Cutting yield by
expert points
•Cutting yield by
algorithm points
•Mean and SD of
difference
Cutting level I
Estimating primal yield
Cutting level I
Objectivity in benchmarking
Average densities Fat Meat Bone
Denmark 0.997 1.117 1.433
Norway 0.976 1.105 1.434
Germany 0.984 1.108 1.463
Sweden 0.990 1.120 1.419
Cutting level II
Estimating final
product yield
Cutting level III
Cutting complexity increases
- for algorithm and operator
y = 0,8171x + 0,7758 R² = 0,8773
4,0
4,5
5,0
5,5
6,0
6,5
7,0
7,5
8,0
4,0 5,0 6,0 7,0 8,0
væ
gt
vir
tuel skæ
rin
g -
b
ack18 4
0m
m s
pæ
k
vægt skæreforsøg - back18
Virtuel skæring vs. skæreforsøg back18 40 mm
y = 0,5236x + 1,4234 R² = 0,6232
3,5
4,0
4,5
5,0
5,5
6,0
6,5
7,0
7,5
8,0
3,5 4,5 5,5 6,5 7,5
væ
gt
vir
tuel skæ
rin
g -
b
ack 3
mm
sp
æk
vægt skæreforsøg - back18
Virtuel skæring vs. skæreforsøg back18 3 mm
Accuracy chain
Process Scanning
protocol
Assessment Tissue
density
Cutting
level
Primary
contributions
Manufacturer Algorithm Age Recipe
Reconstruction Breed Alignment
Slice thickness Feeding
Energy
Range 0.1% - 1.0% 0.1% - 1.3% Approx. 1 % In progress
Virtual cutting
Expert cutting
1,96 1,9
0
0,86
0,26
1,130,91
1,43
0
0,5
1
1,5
2
2,5
1 2 3 4 5 6 7 8
Butcher 3 = 57.60
Pe
rce
nt
Questions??
Lars Bager Christensen
Allan Lyckegaard, Peter Stanley, Hans Henrik Thodberg,
Mads Fogtmann, Martin Vester-Christensen, Søren Erbou,
Thomas Mosbech, Lasse Farnung Laursen, Bjarne
Ersbøll, Rasmus Larsen, Michael Judas, Jesper Blom-
Hanssen, Claus Borggaard, Eli V. Olsen, Marchen Hviid,
Ronald Sørensen, Claus Søndergård, Peter Vorup, Torben
Kvamm, Mianne Darré, Bo Jespersen, Mikkel Engbo
Jørgensen, Omar Gamarra, Niels Chr. Kjærsgaard, ……
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