Frage von !i!:
Hi,
I do not really so much with video recordings, so I need even a few tips of you.
I work at www.openstreetmap.org with, then we create a free world map, as we leave the streets with GPS and take notes.
In order to simplify the recording of notes, I extend our editor that can play videos georeferenced:
http://wiki.openstreetmap.org/wiki/JOSM/Plugins/VideoMapping
http://wiki.openstreetmap.org/wiki/Videomapping
http://wiki.openstreetmap.org/wiki/DE:Presseteam/Presseinformation
I have already made a few test drives. But there is the problem that, from ~ 20km / h, the objects are blurred and bad happen in the same frame and a ghostly double.
As I said I had no idea and just made the sport Recording mode. Can not that be even better? Somehow put low exposure times? A progressive (; therefore not interlaced) mode do not seem to have most of Cams: (;
Would be great if a few professionals could express views:)
Greeting
Matthias
Antwort von !i!:
Nanu has, None an idea? : (
Antwort von beiti:
You have there the typical interlaced combs in it. This happens when the camera takes an interlaced signal and you change that in the further processing and / or play the shots on a computer account.
For Web video must take place somewhere, a deinterlace. Some providers such as YouTube make the car, but with others you have to do it yourself beforehand.
Before we think ahead here on the basis of presumptions: How does it look your existing workflow?
Also with any Camera (in what format) is created the video? How is it in the computer? What software and what settings it is processed?
Antwort von beiti:
So the picture would look like after the deinterlace.
Antwort von Blackeagle123:
Is quite clear. You have 50 fields in 1 second. That is, at a speed of 20km / h = 5.5 m / s. That is, you're moving from a half frames to the next by 5.5 m / s divided by 50 And that is 0.11 m. Since there are only 50 fields, one could theoretically divide by 25 and has 0.22 m.
However, synonymous with 25 frames you will not get a good result, because you then have a strong jerk in Picture. The greater the distance to the object, the less it is noticeable when you move the camera by 0.11 m or 0.22 m.
Therefore you'll synonymous with a jerking video deinterlacing have. Or am I mistaken? So, that is already at 20km / h very much if you are thinking that you are one of fields next to the next just 11cm right / left are. The Picture of what you have uploaded, looks as though the fields mixed together ".
At the great distance that you have in the Picture, I guess, but synonymous, that you're (gone to the time) faster than 20km / h.
You could even theoretically the distance between the fields calculated by how fast you went. (If you know how far away the object was about!) Thou canst times you look at what speed the videos are still usable. In a moving video that is at 20 km / h probably barely notice, just look a bit blurred.
If you do not need the side shots (including synonymous, but you just take photos, they hang together): Then the camera directed not just to the sides of the window, but at an angle to the front, a quasi Schrägblick across the street, s.der it goes along. For You know: the objects are next away, the less falls on the whole. Außedem come that when you "Schrägblick" on the object to / go away and simultaneously to left and right are going ... and so the effect is somewhat diminished.
Do you need the frames for your projects? Based on your speed then you need to calculate how many trips you need per second and stand a good DSLR that makes a Stillimage after the other with the shortest possible exposure time.
The bigger problem will probably be stuttering and wobbler. That should be left drüberlaufen in a video a stabilizer.
Greetings!
PS: The Website is not working that you have mentioned above.
Antwort von Blackeagle123:
beiti: How did you save one picture deinterlaced? What program? Actually, that's only two pictures, right? (Moved by hand, or the individual fields?)
Antwort von beiti:
beiti: How did you save one picture deinterlaced? What program? Actually, that's only two pictures, right? (Moved by hand, or the individual fields?) Why should it take two pictures?
Move would not be a universal method, because so movements are not always horizontal (although in this example, probably will).
When deinterlacing is usually every other line (that is one of the fields) and the missing lines away from the rest of the image information (ie, the other field) interpolation.
It is synonymous called smart deinterlacer, the ridges seen in the Picture and interpolate only there, where is it really necessary, It has advantages, such as when shooting from the tripod, because you can then, for the stationary background For the full resolution and the interpolation s.bewegten only parts of the image is. In this example, it would bring nothing, because as the whole picture is in motion.
I have done it with the deinterlacing filter of Photo Line. Other image editing programs (Photoshop, Gimp etc.) the same way.
If you want to deinterlace all the videos, you will use a video editing program. But does it work the same way.
Antwort von !i!:
uiuiui soooo many answers, thanks s.der first place: D
@ Beiti
On the Wiki pages I've done meticulously as possible but here you again:
Video Camcorder (here SonyNV GS-300) with tripod in tram, sports mode
-Dubbed with Motion DV Studio LE (mud program)
Videolan client-Angleigen with deinterlacing
(as wonderful
was the mistake with a linear deinterlacing!)
-This is of my plugin (see above) included in our Editor
GPS is running with authority and is s.einer synkronisiert GPS track and video -> you can then click on the GPS track and jumps to the right place
It could be faster, in fact, as the train came out of a curve, your notice with the film is slanted entirely correct, as this decreases the angular velocity.
Ok problem seems solved, so a measure, I am sure that I once tried some other deinterlacer * embarrassing * * embarrassing *
