Spatial Extent of Data
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ViTexOCR; a script to extract text overlays from digital video
The ViTexOCR script presents a new method for extracting navigation data from videos with text overlays using optical character recognition (OCR) software. Over the past few decades, it was common for videos recorded during surveys to be overlaid with real-time geographic positioning satellite chyrons including latitude, longitude, date and time, as well as other ancillary data (such as speed, heading, or user input identifying fields). Embedding these data into videos provides them with utility and accuracy, but using the location data for other purposes, such as analysis in a geographic information system, is not possible when only available on the video display. Extracting the text data from imagery using software allows these videos to be located and analyzed in a geospatial context. The script allows a user to select a video, specify the text data types (e.g. latitude, longitude, date, time, or other), text color, and the pixel locations of overlay text data on a sample video frame. The script’s output is a data file containing the retrieved geospatial and temporal data. All functionality is bundled in a Python script that incorporates a graphical user interface and several other software dependencies.
Author(s) |
Evan T Dailey |
Publication Date | 2017 |
Beginning Date of Data | 2017 |
Ending Date of Data | 2017 |
Data Contact | |
DOI | https://doi.org/10.5066/F7833Q56 |
Citation | Dailey, E.T., 2017, ViTexOCR; a script to extract text overlays from digital video: U.S. Geological Survey data release, https://doi.org/10.5066/F7833Q56. |
Metadata Contact | |
Metadata Date | 2020-10-19 |
Related Publication | There was no related primary publication associated with this data release. |
Citations of these data | No citations of these data are known at this time. |
Access | public |
License | http://www.usa.gov/publicdomain/label/1.0/ |
Harvest Date: 2025-01-22T04:21:20.072Z