Different CCTV video types

DNV

1. DNV-video_type_1

   1. All 81 (only 80 videos were used for training) videos uploaded in 2022 have type 1.

   2. The PACP code is followed by the word Observation.

      

2. DNV-video_type_2

   1. All 406 PACP videos uploaded on January 2023 have type 2.

   2. The PACP code is followed by the word Code.

      

1066 WRc videos

1066 WRc videos were not analyzed

SD1

1. SD1-video_type_1

   1. Distance is located at the bottom left. The distance is not followed by any characters.

      

   2. The description of PACP code appears in the black box and the distance is followed by T. (not sure if latter part is true for other cases)

      

   3. Sometime, I saw some frames with distance followed by FT.

      

2. SD1-video_type_2

   1. Distance is located at the bottom left. The distance is followed by F.

   2. Texts are inside non opaque box.

   3. Type 2 videos do not display PACP codes.

      

3. SD1-video_type_3

   1. Distance is located at the bottom left. The distance is followed by FT.

   2. Texts are inside black box.

      

   3. The distance appears twice when the The description of PACP code is shown.

      

4. SD1-video_type_4

   1. Distance is located at the bottom left and is followed by FT.

   2. Distance also appears in the middle of the frame and is followed by LF.

   3. Texts are not bounded by boxes.

      

   4. The description of PACP code appears on top of the distance located at the bottom left.

      

5. SD1-video_type_5

   1. Distance is located at the bottom left and is followed by FT.

   2. Texts are not bounded by boxes.

      

   3. The description of PACP code appears on top of the distance located at the bottom left.

      

6. SD1-video_type_6

   1. Distance is located on the top left and is followed by FT.
   2. The description of PACP code appears below the distance located at the top left.
   3. A major issue is the PACP code description they show in the video can be non-standard as in the below example. These scenarios will not be detected by current condition code extraction method. Need to explore a re-implementation based on the AI3 research. Utility Metadata DB also does not contain code description information they have used in video annotation.

COV

1. COV-video_type_1

   1. Distance is located at the top left.

   2. Texts are inside blue box.

      

   3. Counter distance appears when defect/feature code is entered.

   4. The PACP code is shown and followed by its description. It is located under the counter distance.

      

2. COV-video_type_2

   1. Distance is located at the top left under pipe's property box.

   2. Texts are inside black box.

      

   3. Counter distance appears when defect/feature code is entered.

   4. The PACP code is shown and followed by its description. It is located under the counter distance.

      

METRO

1. METRO_video_type_1
   1. Distance is located in the bottom region and ending with m.
   2. PACP code and the description is displayed in full in the center of the frame. Multiple defect information can appear in the same frame.
2. METRO_video_type_2
   1. Distance is located in top left region with two decimal places and ending with m.
   2. Defects are annotated by both PACP code and the description.
3. METRO_video_type_3
   1. Distance is located in the bottom region ending with m, followed by timestamp.
   2. The defects are annotated by both PACP code and the description is truncated, located on the top-left region.