An introduction of combined X-ray and laser range imaging system for bone fragments detection in chicken fillets Bin Zhu Biological Resources Engineering Dec. 3, 2003
Notes Most the research are done by Dr. Xin, Dr. Hansong and Dr. Tao, in Bio- imaging and machine vision lab, Biological Resources Engineering Department. Most the research are done by Dr. Xin, Dr. Hansong and Dr. Tao, in Bio- imaging and machine vision lab, Biological Resources Engineering Department. Most materials and data are from their work. Most materials and data are from their work.
Biosensors Utilizing the absorption and reflection characters of bio-materials to get internal information from them. Utilizing the absorption and reflection characters of bio-materials to get internal information from them. X-ray: Absorption X-ray: Absorption Laser: Reflection Laser: Reflection
Background USDA, billion pounds of poultry annually poultry annually
Ⅰ X-ray technology and food inspection
Overview of X-ray imaging u: Materials d: Thickness
Typical applications of X-ray imaging Medical Diagnosis Medical Diagnosis Homeland Security Homeland Security Material Research Material Research Industrial Inspections Industrial Inspections
Challenge of bone detection The thickness is uneven The thickness is uneven The bone fragments are very tiny The bone fragments are very tiny
Current solutions Submerging the chicken meat in water Submerging the chicken meat in water ? cross contamination ? cross contamination Press the meat mechanically Press the meat mechanically ? shape damaged ? shape damaged Dual energy X-ray Dual energy X-ray ? physics limitation ? physics limitation
Questions How can we address the thickness variation problem directly? How can we address the thickness variation problem directly? How can we extract the thickness information from the uneven chicken meat? How can we extract the thickness information from the uneven chicken meat?
Ⅱ Laser 3D imaging
Approaches Time-Of-Flight (TOF) based technique Time-Of-Flight (TOF) based technique Structured light based technique Structured light based technique
Structured light based technique
The laser 3D imaging subsystem
Ⅲ Combined X-ray and Laser Imaging System
Overview of the combined system 0.6m/sec
Laser 3D Image to X-ray Image Mapping X-ray image: X-ray image: 3D Laser image: 3D Laser image:
Transformation X-ray image: X-ray image: 3D Laser image: 3D Laser image:
Thickness compensation
Results
Results
Results
Results
Results
Thank you!