NEA-1820 GTSP.

GTSP, automatic ultrasonic inspection of Guide Tube Support Pin in nuclear power plants

NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROGRAM OR FUNCTION, METHODS, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, CPU, UNUSUAL FEATURES, RELATED OR AUXILIARY PROGRAMS, STATUS, REFERENCES, HARDWARE REQUIREMENTS, LANGUAGE, SOFTWARE REQUIREMENTS, OTHER RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHORS, MATERIAL, CATEGORIES

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1. NAME OR DESIGNATION OF PROGRAM: GTSP

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2. COMPUTERS

To submit a request, click below on the link of the version you wish to order. Rules for end-users are available here.

Program name	Package id	Status	Status date
GTSP	NEA-1820/01	Arrived	10-JUL-2008

Machines used:

Package ID	Orig. computer	Test computer
NEA-1820/01	PC Windows

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3. DESCRIPTION OF PROGRAM OR FUNCTION

GTSP Visitor is a program for automatic detection of known object's position in video frames. It is especially designed for automatic ultrasonic inspection of guide tube support pin (GTSP) in nuclear power plant.

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4. METHODS

A GTSP and its position are detected by two-step matched filter algorithm. In first step, a video frame including GTSPs are transformed by DFT. DFTed image is multiplied by matched filter, made from a guide tube's image, in frequency domain for estimate Guide Tube?s center position. Guide Tube?s areas around estimated center position are erased.(pixel values of image are filled with zeros). In next step, image whose guide tube areas were erased is processed as described above but using a different matched filter made from a support pin?s image. Then the positions of two GTSPs are estimated and their orientation is estimated too. Finally its position and orientations are used for control the robot toward the desired position.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

Robot control is out of the scope of this program.
OpenCV and compatible camera are necessary.

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6. TYPICAL RUNNING TIME

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7. UNUSUAL FEATURES

Generally, GTSP inspection is a troublesome task because of GTSP is so small(~2.5mm) and operator is far apart from(~20m) the GTSP. This program can be used as a module of a GTSP inspection robot control system. Then, the robot could be aligned its ultrasonic probe to just under of the desired GTSP automatically.

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8. RELATED OR AUXILIARY PROGRAMS: Video in/out functions from OpenCV library are used.

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9. STATUS

Package ID	Status date	Status
NEA-1820/01	10-JUL-2008	Masterfiled Arrived

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10. REFERENCES

NEA-1820/01, included references:

- A fast guide tube position estimation algorithm for control rod support pin
inspection robot, 2005, Korea Nuclear Society Multidimensional Digital Signal
Processing, Dan.E. Dudgeon, 1984, prenticehall

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11. HARDWARE REQUIREMENTS

Windows XP based PC with at least 2.0Ghz Pentium or equivalent, OpenCV library installed, USB or 1394 camera which can be recognized by OpenCV.

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12. PROGRAMMING LANGUAGE(S) USED