Fspy import error trying to import an fspy project with no camera parameters

Hi,

I have the most recent Blender download, 2.93.1.
I have successfully downloaded fSpy and have enabled the add-on in Blender. I can see the ‘import fSpy file’ under File->Import.
The only issue is that I cannot seem to download the app on my computer. I have a Macbook Air M1. I see that blender has the add-on enabled but no app for me to create .fSpy files that I can then import. Any advice?

@stuffmatic stuffmatic
Hay I am using a camera with a 1/2.3-inch (6.17mm by 4.55mm) sensor and a 20mm lens.
I am trying to set up a picture of a swimming pool (frontal taken) swiming pool has a very straight and lengthy ground shape.

When I manually input the focal point and sensor W and H and import that into Blendet the distance
is ‘way off’. I tried 1.edge points, 2.edge points and 2.edge points with an extra reference distance.
But I can get it into Blender with the proper proportions.

It looks correct in Blender at first but the real-time length is ‘way-off’ that because when I implement
the UV and texters it wont match with the shape at all.
Q1. Is the 1/2.3-inch sensor in combination with a 20 mm lens not suited to use in fSpy?
Q2. Or what would be the working method to approach a lengthy swimming pool in fSpy?

Thank You,
Winn

(be save)

I have a small suggestion. When displaying the planes and their divisions, would it be possible to manually increase or decrease the size of that plane that is displayed?

Similarly, would it be possible to manually increase or decrease the number of divisions in that plane? I use the tool to manually interpolate/extract data right from fSpy. This would be super helpful to be able to extract relative dimensions.

Thanks for a great tool.

Hello,

I have set up an image and tried importing it into Blender.

When imported, the background image that is set, is misaligned from the camera crop. If I go into background image settings and manually adjusted it to be roughly within the box, then everything’s ok.

after manual adjustment:

Perspective match 01v3.zip

Any ideas where it’s gone wrong?

Hey,

When I import an image it’s giving the incorrect lens type. The image was taken with a 50mm lens but f.spy is saying 44mm and there doesn’t seem to be a way to change it? I’ve selected its taken with a Canon5D which is the camera that was used but the its lens number is wrong…..
This isn’t Blender specific as it happens in the main f.spy program.
Any reason for this? Or am i missing something?

Cheers.

I’ve noticed that sensor size is not imported. And because of that actual focal length is imported incorrectly (based on default 36 mm sensor). Yes, it seems that field of view actually is the same (as in .fSpy) but toggle to millimeters and you’ll notice the focal length what is different from the value in .fSpy

In Blender — sensor tweaking will change field of view as well, but doesn’t change focal length in millimeters.

So the fix should be like that:

1. Set sensor size to blender camera first
2. Set field of view value

Thanks.

Hi,
when I import an fSpy project into blender it messes with the scale in an odd way. Everything comes in massive but isn’t labelled as such.
I used fSpy to label two axes, a third to calculate the image centre and then labeled a real world distance to get the distance from the camera. However, after importing to blender and making cubes roughly the right size (scale set to one) I noticed that I was having to set light strength absurdly high to see any change (100,000 and above). Also, rotating the camera around the mesh would result in the furthest walls from the viewpoint being cut out, as though blender were reaching its max draw distance. after scaling everything down to workaround this issue, any new lights I create cover a surface area many times larger than the ground plane and also need scaling to be useful.
Apologies if this is just me missing something simple but I’ve tried everything I can think of.

Updating to the latest version of 2.8 didn’t fix the issue and the same issue is there in 2.79.

I’m on windows 10 ver 1803,
i7 4770, gtx 1050ti, 16gb ddr3

Here’s a pastebin with the .blend file
http://pasteall.org/blend/index.php?id=51656
Many thanks,
Mike

Hello,
like the title states, importing a fspy scene into blender 3.0 causes it to use old tiled rendering instead of the new and improved progressive rendering engine. Performance is terrible as well.

How to reproduce:

Open blender and try to render a normal engine (result: uses new rendering engine)
import a fspy scene and hit render again (result: old rendering engine is being used with terrible performance: render time of sample scene with 3.0 rendering engine: 10s, after importing 1 min 09s)

Dear Support,

I really like your Fspy App. Very helpful. Great work.

I’m currently using Fspy 1.0.2 in Blender 2.8 Beta as of 02/05/2019 install on Windows 10.

I am having an issue when I switch from Camera view to Perspective view. It rotates the model 180° in the viewport? If I switch back to Camera view all is well again, Of course, if I manually rotate the model while in perspective view it is then upside down in Fspy Camera view.

I did all the same things in Blender 2.79 and there was no rotation applied there. So, appears on my end to just be 2.8.

I’m hoping there’s a simple setting I can change?

Thanks,

Gary

I think this plugin is very useful and can be used with your fSpy to achieve very good results, I hope you will consider doing this, thank you.

我认为这个插件非常的好用,可以配合您的fSpy实现很好的效果,希望您可以考虑这样做一下,谢谢.

Hello i got this error when try to import to blender.

Blender version 2.93.5.
fSpy Blender add-on version 1.0.3

Error Message:
fSpy import error: Trying to import a file that is not an fSpy project

When importing a .fspy, the camera is adjusted, but no image is loaded.

After installing the add-on (both manually and from within Blender) I am unable to activate it. This is the error I get from Blender 2.79:

I tried restarting Blender and the computer, reinstalling the add-on but nothing changes.

Badminton court dimensions are 6.10 x 13.41m and every time I set Reference distance for x correct (6.1) then the plane is too long (length) and when I set Reference distance for y (13.41) then the plane is too narrow.
Fspy export file and image are included.

http://puu.sh/E8CbJ/17fd60b756.png
Export.zip

Blender wouldnt install the addon untilo I removed the files and recompressed them in a new ZIP file.

Worked great.

The next day it’s just not installed, and wont install.
Reinstalled latest blender and restarted computer, no luck.

Hi there, I am having an issue where the background image is not sitting correctly in the camera frame. I have attached my blender file if you would like to check.

Thank you very much.
Fspy Camera Issues.zip

Project exported from fSpy. fSpy save project without extension. In both cases (trying to import file without extension and file with extension wrote by myself) i have same error. Blender 2.8 and checked in 2.79 too. fSpy 1.0.1.

Installed addon version 1.0.3, Trying to import .fspy file in BLender 2.79, but it throws an error.

Kindly Help. I love this Application, its awesome, but doesnt works for me….
THanks for Developing it and sharing with us.

Vickievik

Blender 2.83 5-21 13:03
fspy V 1.0.3

import an fspy file
hit undo
instant crash

I instinctively hit undo when I split the screen one too many times, but that isn’t an action you can undo. I opened to and verified with another file, it crashes if you hit undo the action of the import.

A very minor gripe but thought I would share: it would be nice to have an «about» dialog showing the current version.

Gold plating: link to release notes on GitHub and a «check for updates» option.

Nice work btw! I tried to dip my toe into Electron as well but the project fell through. 👍

Hi,
When I follow the instructions to install the fspy add-on (1.0.3) in blender 2.83, when installing from file, no zip folder can be seen from the interface (the zip folder is in the download folder in my mac). Only the unzipped folder appears in the list, and when I select it it displays the 3 files contained in there (init.py , addon.py , fspy.py). I tried to select them one by one and click install or select them 3 all at once and click install, none of it seems to work, I don’t see any fspy instance appear in the add-on list i’m supposed to box check.

Could someone please help ?
Thank you in advance

Importing a new fSpy camera messes up an existing fSpy camera, no parameters change in the old camera properties but the frame aspect ratio somehow changes to match the aspect ratio of new camera, even with the option «Update existing import» unchecked when importing the new camera.

The following images show how the old camera view changes and the model mismatch once a new fSpy camera is added to the scene.

Blender crashes when I attempt to import the example project.

$ blender
Read prefs: /home/stefan/.config/blender/2.82/config/userpref.blend
Warning: property 'release_confirm' not found in keymap item 'OperatorProperties'
Writing: /tmp/blender.crash.txt
Segmentation fault (core dumped)

If I deselect Import background image then the import succeeds.

Linux 4.19.118-1-MANJARO #1 SMP Thu Apr 23 10:54:30 UTC 2020 x86_64 GNU/Linux
blender 2.82a
fSpy 1.0 3

Hello!
I have tried importing a fSpy file to Blender several times, but it always fails and shows the following mistake. Is something wrong with my system or with the folder Blender is saved?
Thanks a lot in advance!

Windows 10 x64
Blender 2.82a
fSpy 1.0.3