Data · dataset · 2025
VO1/VO2 MARS VISUAL IMAGING SS EXPRMNT DATA REC BROWSE V2.0
Listed in NASA Data Portal
This data set includes sub-sampled versions of Viking Orbiter images that are intended to facilitate rapid viewing of the image collection.
Description
The image data in these browse images have been reduced in size by sub-sampling the original image by a factor of 4 in both lines and samples. Thus, the data volume has been reduced by a factor of 16.
A Viking Orbiter browse image contains 264 lines and 300 samples. A filtering procedure was used in generating the browse images because Viking Orbiter images commonly contain noisy data or are missing data. The brightness value of a pixel in a browse image is the median brightness value of an array of 4 by 4 pixels from the original image.
Read the rest (1 more)
If the 4 by 4 array of original pixels contained zero values, those zero value pixels were not used in determining the median value. Of course, if the entire 4 by 4 array contained zero value pixels, the corresponding pixel in the browse image was assigned a zero value.
Links
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/vo1-vo2-mars-visual-imaging-ss-exprmnt-data-rec-browse… ↗
landing page · from data nasa gov
Catalogue records · 1
- CKAN API data.nasa.gov/api/3/action/package_show?id=4c093a0c-d979-44dc-ade8-3c5e96c72… ↗
metadata API · from data nasa gov
Topics
Related
- Possibly the same asVO1/VO2 MARS VISUAL IMAGING SS EXPRMNT DATA REC BROWSE V2.0
Provenance · 1 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Data Portal | 4c093a0c-d979-44dc-ade8-3c5e96c7272e | 9 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[modality].local:modality:image | enrichment · data nasa gov | keyword-concept-rules@1.0.0 | title+description (75%) |
| concepts[modality].local:modality:imaging | enrichment · data nasa gov | keyword-concept-rules@1.0.0 | title+description (75%) |
| created_date | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| description | source · data nasa gov | connector:data_nasa_gov@1.0.0 | /notes |
| license_text | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| publication_date | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| title | source · data nasa gov | connector:data_nasa_gov@1.0.0 | /title |
| updated_date | source · data nasa gov | connector:data_nasa_gov@1.0.0 |