LAB: Dimension Measurement with 2D camera

I. Introduction

A company wants to measure the whole dimension of a rectangular object with a smartphone.

You are asked to make an image processing algorithm for an accurate volume measurement of the small object.

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Problem Conditions

• Measure the 3D dimensions (LxWxH) of a small rectangular object

• Assume you know the exact width (W) of the target object. You only need to find L and H.

• The accuracy of the object should be within 3mm

• You can only use a smartphone (webcam) 2D camera for sensors. No other sensors.

• You cannot know the exact pose of the camera from the object or the table.

• You can use other known dimension objects, such as A4-sized paper, check-board, small square boxes etc

• Try to make the whole measurement process to be as simple, and convenient as possible for the user

  • Using fewer images, using fewer reference objects, etc

II. Procedure

1. First, understand fully about the design problem.

2. Design the algorithm flow

   • Calibration, Segment the object from the background, Finding corners etc

3. You can use additional reference objects such as A4 paper, known-sized rectangular objects, etc.

   • you will get a higher point if you use the reference object as simple as possible.

4. You must state all the additional assumptions or constraints to make your algorithm work.

   • You are free to add assumptions and constraints such as the reference object can be placed in parallel to the target block etc

   • But, you will get a higher point if you use fewer constraints/assumptions.

5. Use your webcam or smartphone to capture image(s)

   • Use the given experimental setting of the background and 3D object.

1. Measure each dimension of the test rectangular object.

   • The exact width (W) of the target object is given.

   • Measure only Height and Length

2. The output image or video should display the measurement numbers.

3. Your algorithm will be validated with other similar test object

III. Report and Demo Video

Lab Report:

• Show what you have done with concise explanations and example results of each necessary process

• In the appendix, show your source code.

• Submit in both PDF and the original file (*.md etc)

Demo Video:

• Create a demo video with a title page showing the course name, data, and your names

• Submit the file on LMS

Source Code:

• Zip all the necessary source files.

• Only the source code files. Do not submit image files, project files etc.