georgiisirotenko/concrete_circles_change_detection_video

About Dataset

The dataset consists of 12 high-resolution videos of 3840 × 2160. The videos contain rotating concrete cylinders with a diameter of 22mm. Each video contains two parts separated by a few seconds of black screen, where each part corresponds to the same concrete sample being filmed under different lighting conditions. The video recording process is described below:

1. Concrete sample is fixed to the installation so that the upper base is at the height indicated by the calibrated laser beam.
2. Sample and camera are tilted so that external light does not affect the scanning
3. GoPro camera recording is turned on
4. Manipulator starts (i.e. the LED lights up in one of two positions and starts rotating with the sample)
5. After about a minute the sample rotates 390° and the diode goes out, the sample stops, the switch moves the diode to the second position and the sample starts rotating again
6. After the second minute of recording the recording ends.

All videos can be divided into 6 unique pairs, i.e. for each video there is only one other video in the pair. In this pair, both videos contain the same recorded concrete sample, but in one video the sample was exposed to radiation and as a result contains defects, and the other video captured the same sample before radiation.

All videos are located in the video directory and they are divided into pairs as in the table below.

Before radiation	After radiation
1A.MP4	c1A.MP4
1C.MP4	1Cexp_vrsek.MP4
3A.MP4	c3A.MP4
3C.MP4	3Cexp_vrsek.MP4
4A.MP4	4Avrsek_exposed200st.MP4
5A.MP4	c5A.MP4

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license: apache-2.0