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Questions tagged [image-processing]

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2
votes
1answer
39 views

Map image (x,y) to spherical coordinates [closed]

What is an efficient method to map image pixels (2D-Cartesian) to their spherical coordinates given camera azimuth and elevation? (Ideally, response includes mathematical notation/Python/C++)
7
votes
1answer
2k views

Why not a “live” visual connection with Curiosity on Mars all the time?

Note: Got the idea for this question by @uhoh's question: "Has anything close to video ("live" or otherwise) been shot in space from beyond the Moon ? To have the "feeling" of a "live" connection ...
3
votes
0answers
49 views

How was the landing site decided to land InSight?

From this article The High-Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter plays an important role in evaluating candidate landing sites on Mars. HiRISE ...
11
votes
2answers
247 views

Why meteorological images have missing lines in the center?

I noticed strange blank line in the middle of completely valid images from VIIRS. . This looks like an error in the reception. Would have go unnoticed, unless the same blank line in the middle of ...
5
votes
1answer
104 views

How to develop a photographic film in lunar orbit?

The Lunar Orbiter program was very successful in mapping the surface of the Moon. Images were taken on a 70 mm film, developed in a semidry process, and then scanned by a photomultiplier for ...
5
votes
1answer
239 views

Spectral bands on an Earth-observing satellite

What does it mean when a satellite has these bands[1]: Panchromatic: 450-800 nm 8 Multispectral (red, red edge, coastal, blue, green, yellow, near-IR1 and near-IR2): 400 nm-1,040 nm 8 SWIR: 1,195 nm-...
4
votes
0answers
61 views

What is synthetic tracking, and why would a 35 cm Earth imager be 10-30x better than Pan-STARRS or LSST for interstellar asteroid discovery?

The ArXiv preprint Technical Note: Asteroid Detection Demonstration from SkySat-3 B612 Data using Synthetic Tracking is an interesting read! The abstract says: We report results from analyzing the ...
2
votes
0answers
80 views

Technology to directly observe an exoplanets [closed]

I would like to know what number of space telescopes, ideally mass produced ones using current technology and that could be cheaply manufactured and launched en-mass via the future SpaceX BFR. How ...
4
votes
0answers
118 views

Why are so many Lunar Reconnaissance Orbiter images blank?

When downloading Lunar Reconnaissance Orbiter LRO NAC images from the website https://pilot.wr.usgs.gov/ a significant portion of them have no useful data -- they have a sort of plaid pattern. Does ...
4
votes
4answers
372 views

What is the line in this picture?

I'm curious about this picture taken from Osiris-Rex. There is a faint vertical line nearly the width of Earth going from the top to the bottom of the image. What is it? Does it have something to do ...
3
votes
0answers
170 views

Are there ANY verified satellite images of visible light coherent backscattering from Earth?

Coherent backscattering is an optical phenomenon which is a bit complicated and as far as I know is pretty difficult to demonstrate in visible white light images. Image below from here. According to ...
7
votes
1answer
695 views

Blue region in satellite image

In one BBC article called "Etna escape: 'Pelted with the deadly, hot debris'", there was an image with the following description: Europe's Sentinel-2a satellite pictured Thursday's lava flow from ...
30
votes
5answers
4k views

Is it possible to see animals from space?

Will satellite imagery be able to see the backs of big animals such as lions, tigers, elephants, horses or zebras from space when they venture out in the open? I've not been able to find satellite ...
5
votes
1answer
194 views

What are these echo-like artifacts in some SDO images?

I was looking at the Galleries in the NASA Scientific Visualization Studio and in the banner they show an image from SDO - the Solar Dynamics Observatory. I've posted it below along with a cropped, ...