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Messages - Brit

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16
General / Re: Focal length and pixel size for a DJI Mavic Drone
« on: December 11, 2017, 02:08:06 AM »
I finally had one set of Mavic photos calibrate - at .00157777, with the focal length at 4.73. the pixel size is a bit different to the numbers above. Could my numbers be incorrect? Or are they close enough?

17
General / Re: My photos never seem to calibrate (always NC) lately
« on: December 09, 2017, 11:23:47 PM »
Thanks.

So the pixels size is the most important? I can leave the focal length out of the calibration tool without much of a problem in the final result?  It seemed to work OK.

18
General / Re: My photos never seem to calibrate (always NC) lately
« on: December 09, 2017, 05:03:24 AM »
Thanks for the info on the sensor pixel size! But of course since I used 2 focal lengths on the zoom lens I cannot add that to the calibration.

How important is the calibration? It still more or less works without it.

"Smallpoly", I placed 2 small sets with different focal lengths of images on this download link: https://mega.nz/#F!F9IVXRpQ!-epXlm7QRy5DC1RbRYal6Q

19
General / Re: My photos never seem to calibrate (always NC) lately
« on: December 08, 2017, 12:20:48 AM »
What in lay terms does this mean? And what can I do about it? It has happened either with my new cameras (both are new and working very well) or it's the new software versions.
I'll upload the images when I have a chance. ...Do they need to be calibrated?  It seems to more or less work with nc images.

20
General / My photos never seem to calibrate (always NC) lately
« on: December 07, 2017, 09:37:20 AM »
My photos never seem to calibrate lately. In the last year or so my photos rarely seem to calibrate. I upgraded my drone from a P3 to a Mavic, and my camera from a Sony RX100 I, to a RX 100 IV.

I did find the specs for the calibration on this forum for the Mavic, but it’s a mystery on why the Sony images often come up “NC” after aligning.

I usually use the lens at the default wide angle, but I sometimes mix it with a shorter focal length for detailed shots, Photoscan almost always used to catch the calibration. (Albeit, it stills seems to scan ok with NC alignments.) Any suggestions?

21
General / Re: Focal length and pixel size for a DJI Mavic Drone
« on: September 03, 2017, 04:23:15 PM »
Thanks! It unusually does detect these values, but for some reason it hasn't on my new Mavic's images, so far .

22
General / Focal length and pixel size for a DJI Mavic Drone
« on: August 28, 2017, 09:19:26 AM »
Does anybody know what the focal length and pixel size for a DJI Mavic Drone are? I need to punch those numbers into the Camera Calibration dialogue box since all my Mavic images have come into Photoscan with "NC" next to the image names. I just upgraded from a DJI Phantom 3 (whose focal length is 3.61 and x/y pixel sizes both .00170572 according to the Camera Calibration dialogue box). The Mavic camera is slightly different than the Phantom's. 

23
General / Re: Best Way to make Masks?
« on: January 18, 2015, 07:53:47 AM »
Thanks! "Select color range" works brilliantly, and it can inverse the selection ...saving a step. This process as part of an action allows for easy batch processing and will save a lot of time. 

24
General / Re: Best Way to make Masks?
« on: January 18, 2015, 06:16:24 AM »
And here is  screen save of Photoshop

25
General / Re: Best Way to make Masks?
« on: January 18, 2015, 06:14:29 AM »
Here is what I ended up with using Quick Selection and Magic wand and then using an action I created > similar>Inverse, unsharpen>set quick mask>save>close

26
General / Best Way to make Masks?
« on: January 13, 2015, 07:01:44 AM »
What is the best way yo make masks? I have Photoshop, After Effects and Premiere. I have been selecting backgrounds in Photoshop, inverting the selection and then saving each file, but its incredibly tedious with 100+ files. There must be a better way.

27
General / Re: Crash - how much Ram is recommended? I have 20 gigs
« on: January 01, 2015, 06:42:46 AM »
I put in 32 GB ddr4 ram, a new processor and a solid state hd and it worked! However I noticed that the scan is skewed so that the rectangular box stele is much higher on one side than the other. Can anything be done to square it? 

28
General / How does one mask by quickly "automating" the process?
« on: January 01, 2015, 06:30:50 AM »
How does one mask by quickly "automating" the process: “from back ground” and “keying”? This excellent video https://www.youtube.com/watch?v=9_F-b2hxP_o touches on the subject but doesn’t go into detail.

 I have Premiere Pro CS6 with After Effects (which I never use since Premiere has enough effects for my needs including the outstanding Ultra Key). I would love to know how to do these processes. How does one generate all the masks with the keying?   

29
General / Re: Crash - how much Ram is recommended? I have 20 gigs
« on: December 04, 2014, 01:29:51 AM »
What is (and were do I find) the "meshing in blocks" scripts?

30
General / Re: Crash - how much Ram is recommended? I have 20 gigs
« on: December 04, 2014, 01:19:08 AM »
My new system has defective RAM (and/or a defective Mother Board) that will be replaced tomorrow.

A technician just told me that the main bottle neck now is probably my system hard drive (a 10k rpm Raptor). He said that a solid state drive would make a huge difference –even with 32 gigs ram. Is this true? I just rebuilt my system taking almost 5 days and don’t want to repeat this.

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