Messages

1

Camera Calibration / Minimum triggering interval for Sony alpha a5100 camera

« on: March 27, 2019, 03:56:27 PM »

Hello Everyone.
Can anyone tell me what is the minimum triggering interval for Sony alpha a5100 camera?
I search on different websites, but still no satisfying results.
If anyone knows about this please, let me know.

Thanks in advance.

2

General / Export Orthmosaic JPEG/TIFF/PNG

« on: June 21, 2017, 04:58:41 AM »

Hello. I accumulated some aerial images. Then I export it as JPEG images. THe exported image size is 226mb, 38500*45000. But I can not open the  image by adobe photoshop. It shows "could not complete your request because of a problem parsing the jpeg data". What can I do? My most of the exported images got this problem. Please let me know what is the problems and it's solution. Thanks

3

General / Camera Field of view

« on: August 04, 2016, 04:19:23 AM »

Hi,
Is there any problem if I use large field of view for image acquisition and use in photoscan for accumulation? Currently I am using a 16mm lense from a height of 11 m. and it gives me a field of view 16.2 m*10.7m. And my fields size are field 1: 84m*24m and field 2: 100m*9.8m.
Every time I made a 5-6 flight line for my drone. But I found that 1-2line flight is enough to cover the whole filed because of bigger field of view. But it did not give good result. Even full flight of 6lines also sometimes cannot give me good result. Is it the fault of lense or field of view that it takes almost same image every time because of bigger field of view.

Wahat should I do? Do I need to change lense? If yes then which size will be good? I am also concern about resolution.
 
Please give me some suggestion if there is any solution and How can I improve my accumulation.

Thanks

4

General / Re: Photo alignment

« on: August 02, 2016, 02:39:54 PM »

Can anyone please give me some suggestions about this problem.

5

General / Photo alignment

« on: August 01, 2016, 11:16:03 AM »

Hello,
Why this problem is occurred? How Can I resolve this problem. Please check the attached files.

My image was take H90% and W80% overlap and from 11m height. Sony Alpha a5100, 24.3MP camera.

6

General / Re: Orthophoto do not open in photoshop CS6

« on: July 30, 2016, 08:30:13 AM »

Hi stihl,
Thank you. I got the mistakes.

I did not understand  the ground classification. Can you explain a little.

I am using Adobe photoshop CS6 exrended version. And the image size are between 80mb to 400mb

7

General / Re: Orthophoto do not open in photoshop CS6

« on: July 26, 2016, 10:15:55 AM »

Hello Alexey,

Error message from Photoshop: Due to JPEG analysis problem, the file cannot be open.
But I can open it on windows photo viewer. It also cannot be open on paint.

For second image I use higher quality for Dense cloud and mesh. But the problem remains.

8

General / Orthophoto do not open in photoshop CS6

« on: July 25, 2016, 05:44:34 AM »

Hello,
I export orthphoto (abc.jpeg) using photoscan. But the jpeg file cannot open in adobe photoshop CS6.
Why this is happening? what is the problem?

After getting orthophoto, it looks good (see attached file pic1). But when I zoom it and it looks like pic 2. Why this is happening? Is there any problem in processing?

9

General / Re: about the photo alignment

« on: July 19, 2016, 11:12:42 AM »

Please check this link below to check my images.

https://www.dropbox.com/s/pli8oag318jblic/Images.zip?dl=0
The images were taken from a 11m height from ground. Using Sony alpha A5100, 24.3MP camera with 16mm focal length.

10

General / Re: about the photo alignment

« on: July 13, 2016, 07:48:12 AM »

Thank you very much.
But still aligning is not working for me. I tried different key and tie point limits. also try to add marker and reposition and re align of selected images.

For high vegetation what are the other options to align the photos. I found usually it can be done by increasing overlap ratio. But for some case, by increasing overlap ration still it's not work. So, I want to know how I can accumulate images? Is there any other options?

11

General / Re: about the photo alignment

« on: July 12, 2016, 08:38:27 AM »

And I want a good higher resolution orthophoto. So if I increase or decrease key point and tie point, is there any problem with resolution?
 

12

General / Re: about the photo alignment

« on: July 12, 2016, 08:35:51 AM »

Thank  you.

Can you tell me about the tie point and key point a little details.

Is there any specific overlap ration for higher vegetation period??

13

General / about the photo alignment

« on: July 11, 2016, 01:37:39 PM »

Hi,
I want to take rice field images using drone. At the beginning of transplanting H85% abd W 60% overlapping worked. But Now after 2months it didn't work. So I increase the overlap ratio to H90% and W 70%. and this time it works for one field. But for  other field H90% and W75% still not working. So, what should I do now??

And for aligning the photos usually we use key point limit is 40000. Is there any problem If I increase this like 4000000. I found it can align photos more good??
Can anyone please explain about key point limit and tie point limit.

I need it urgent.

Thanks.

14

General / about Building Mesh to make a 3D model

« on: June 23, 2016, 10:05:20 AM »

Hello,
I want to make a 3D model for my experiment. But when I go to Workflow>>Build mesh and then select the surface type>>Arbitrary....after starting process.. sometimes later it shows not enough memory (please see attached files). How can I overcome this problem?

My Desktop Configuration
Intel core i7 6700cpu @3.40ghz
Ram: 24gb
SSD: 3TB

15

General / Re: to save orthophoto

« on: May 20, 2016, 10:57:24 AM »

thank you very much. I resolve the problem