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Aerial Photography and Video > request for vertical shots
 
 
FlightPowerVeteran - Location: Herts UK -
Hi,

I just got a RR guest email from a guy requesting permission to use some vertical shots in his final year university project on remote sensing

so I sent him:





I sugeested that there may be a lot of guys on RR keen to help with this besides me. He's asking for good resolution straight down shots e-mailed to:

mujahid@ufl.edu

Also thought it might make an interesting thread here,

Cheers!

Julian
04-20-2004 Over year old.
 
 
T.C.
Veteran
Location: Nottingham. England.

I like the way that dog's rounding up those straw bails in the first shot.
He's got 'em lined up perfectly.

Cum by lad !!!!!!



Cool photo's dude.



Tony
04-20-2004 Over year old.
 
 
DOKEY
rrProfessor
Location: Northampton UK

Nice pics.

Did you really want to spell it like that T.C.




Check the gallery!
04-20-2004 Over year old.
HOMEPAGE  
 
 
Joojoo
Heliman
Location: Gainesville, FL

Thanks a bunch Julian, I just received your email!

As he mentioned, I'm working on my final project for a class called Airborne Instrumentation and Sensor Phenomenology. Although a touch ambitious, the project looks at the design, control, and simulation issues involved with using a fleet of unmanned air vehicles for simultaneous, distributed remote sensing.

As of 11:32AM this morning, my MATLAB simulation code is working well. I'm using Julians gorgeous stooking image to simulate a vehicle flying over a landscape and taking pictures. I have a simple time-dependent image transformation, where the saturation of each shot taken is a function of how long the aircraft has been flying. This is a rough attempt at simulating the typical ground variations that would occur over the course of a mapping flight (light, shadows, objects, etc.).

What I would like to do is apply this simulation to a number of different pictures (ground truth images). Since the vehicle has a specified turn radius, the mapping lines are usually not done in sequence, but rather skipped in order to minimize turn around time. In the final product (for both real and simulated mapping), adjacent lines are often quite different.

My X-Cell 30 camera ship has flown, but I have yet to take any stunning shots. So now I seek the expertise of Julian and anyone else that might be able to help. If you have any images with interesting features and are as vertical as possible, I'd love to run the code on them!

Thanks!

Mujahid
04-20-2004 Over year old.
 
 
T.C.
Veteran
Location: Nottingham. England.

Er !!!!


LOL

Tony
04-20-2004 Over year old.
 
 
ELOSSAM
Veteran
Location: Es

Also thought it might make an interesting thread here,

I second that either from this post or starting a new one based on monthly task threads . What I think could be really interesting is to have a direct link to those thematic posts so anyone can easily look at them whithout doing a large searching. New folks doesnt know about them if they are recently joined. Mike any suggest?
Anyway my contribution to it



04-20-2004 Over year old.
HOMEPAGE  
 
 
Joojoo
Heliman
Location: Gainesville, FL

Same scene, different lighting

Thanks for the help guys! I presented my project today in class. It was well received by the professor and the students. I've received a number of comments about the pictures, it's amazing how much more beautiful the ground looks from altitude.

Here's an addendum to the vertical shot request:

Does anyone have a shot of roughly the same scene under two or more different lighting conditions? The shot doesn't have to be vertical, or even framed similarly, as long as it has some common areas and shows the effect of the lighting on the image.

In my simulation, I'm trying to model the effect of light on a region of interest. So far, I have been doing a simple time-dependent saturation change by converting the RGB image to HSV (hue-saturation-value).

My professor suggested that I find a more realistic model for the lighting changes on the picture. Perhaps looking at two differently lit shots will, ahem, shed light on a possible solution.
04-22-2004 Over year old.
 
 
JoojooHeliman - Location: Gainesville, FL -
Here are some preliminary results of the simulation. The images below are outputs from the remote sensing simulation, where the benchmark aircraft (Cessna 337 Skymaster) and 3 UAVs chase around the image region taking pictures.

The first two pictures show the vehicle flight paths superimposed on the mapped region. The time variation in saturation is evident by the disparity between adjacent flight lines.


Flight Path and data output for Cessna Skymaster


Flight path and output for 3 UAVs


The next two pictures show the same simulation over Nottingham castle. Notice how much harder it is to visually detect a difference between the shots and the original image. The histogram analysis is still able to pick up the change.


Skymaster



3 UAVs
04-22-2004 Over year old.
 
 
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Aerial Photography and Video > request for vertical shots
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