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Author Topic: Shooting interior with Nikon D5300  (Read 4899 times)

Paulo

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Shooting interior with Nikon D5300
« on: October 27, 2022, 07:57:42 PM »
Hello all,

I am a newbie at doing photoscans of interiors. I recently tried shooting the living room in my house with a Nikon D5300 with a 18mm-55mm zoom lens set to 18 mm. I shot some 40 pictures using a photographer tripod with  remote click using wifi connection to my smart phone. The photos (24  Mpix APS-C format) were taken at f/8 with aperture priority and have a good depth of field inf (1.27 m - inf).

However when I run the image quality tool, I get awful results (in the 0.30 range).... see following:
Code: [Select]
Finished processing in 68.938 sec (exit code 1)
 ----------------------------------------------------------------------------------------
 ID                             Calidad         TiempoExp       Apertura        ISO           
 - DSC_9593                     0.307153        1/30            8.0             720           
 - DSC_9594                     0.327863        1/30            8.0             640           
 - DSC_9595                     0.295824        1/30            8.0             2000           
 - DSC_9596                     0.296909        1/30            8.0             2000           
 - DSC_9597                     0.301227        1/30            8.0             720           
 - DSC_9598                     0.296992        1/30            8.0             720           
 - DSC_9599                     0.295499        1/30            8.0             800           
 - DSC_9600                     0.36513         1/30            8.0             1400           
 - DSC_9601                     0.316004        1/30            8.0             2500           
 - DSC_9602                     0.21344         1/30            8.0             640           
 - DSC_9603                     0.451102        1/30            8.0             900           
 - DSC_9604                     0.333277        1/30            8.0             1000           
 - DSC_9605                     0.326995        1/30            8.0             2500           
 - DSC_9606                     0.347903        1/30            8.0             1600           
 - DSC_9607                     0.351856        1/30            8.0             1400           
 - DSC_9608                     0.268191        1/30            8.0             720           
 - DSC_9609                     0.207175        1/30            8.0             640           
 - DSC_9610                     0.310042        1/30            8.0             1250           
 - DSC_9611                     0.305232        1/30            8.0             1250           
 - DSC_9612                     0.28306         1/30            8.0             1600           
 - DSC_9613                     0.286446        1/30            8.0             900           
 - DSC_9614                     0.302923        1/30            8.0             560           
 - DSC_9615                     0.326314        1/30            8.0             640           
 - DSC_9616                     0.335708        1/30            8.0             500           
 - DSC_9617                     0.299755        1/30            8.0             2000           
 - DSC_9618                     0.308968        1/30            8.0             1800           
 - DSC_9619                     0.360405        1/40            8.0             400           
 - DSC_9620                     0.351032        1/50            8.0             400           
 - DSC_9621                     0.490534        1/30            8.0             900           
 - DSC_9622                     0.270364        1/30            8.0             560           
 - DSC_9623                     0.2944          1/200           8.0             400           
 - DSC_9624                     0.296655        1/30            8.0             2000           
 - DSC_9625                     0.28709         1/30            8.0             4000           
 - DSC_9626                     0.401608        1/80            8.0             400           
 - DSC_9627                     0.306372        1/30            8.0             500           
 - DSC_9628                     0.301024        1/30            8.0             800           
 - DSC_9629                     0.305548        1/30            8.0             1800           
 - DSC_9630                     0.272251        1/30            8.0             2500           
 - DSC_9631                     0.347293        1/30            8.0             2000           
 - DSC_9632                     0.35757         1/30            8.0             1100           
 ----------------------------------------------------------------------------------------
 Calidad Imagen Promedia = 0.32, Tiempo Exposicion Promedio = 1/36, Apertura Promedia = 8.00, ISO Promedio = 1229.00
I understanf that with relatively low lighting, the ISO will be quite high but why is the quality so bad? I must be missing something in the Nikon settings

Any help will be greatly appreciated. Following is a link to some of the photos (jpg and NEF) https://drive.google.com/drive/folders/14OcZvRIV4emiGImzqirzJnH-YXMVAenK?usp=sharing

Obviously with such bad quality the alignment is fatal... :(
« Last Edit: October 27, 2022, 09:16:56 PM by Paulo »
Best Regards,
Paul Pelletier,
Surveyor

Alexey Pasumansky

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Re: Shooting interior with Nikon D5300
« Reply #1 on: October 27, 2022, 10:13:57 PM »
Hello Paul,

If you are starting working with the interiors, I would suggest to make a small dataset, having the camera normal to the wall's surface - so it could be a kind of grid pattern, but in vertical plane. So at first I suggest to avoid using very oblique angles, making the focusing on the surface of interest easier.

As for the camera settings, since you are using a tripod and remote shutter, you can lower the ISO but use longer shutter speed options - it should reduce the noise on the image, but preserve the details.
Best regards,
Alexey Pasumansky,
Agisoft LLC

Paulo

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Re: Shooting interior with Nikon D5300
« Reply #2 on: October 27, 2022, 11:43:35 PM »
Alexey,

Thanks a million for the good tips. So I think I should reconsider my image capture scenario incorporating your suggestions. To fix ISO to lower value (i.e. 400) I guess I should switch to manual mode from Aperture Priority?
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Paul Pelletier,
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JJ

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Re: Shooting interior with Nikon D5300
« Reply #3 on: October 28, 2022, 09:45:49 AM »
what's your use of the scan? a basic model to use as a reference for further modelling or do you need a high quality scan?

one issue will be if you have a white ceiling with little definition

Bzuco

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Re: Shooting interior with Nikon D5300
« Reply #4 on: October 28, 2022, 10:27:04 AM »
Hi Paulo,

I am guessing you were ~4m far from wall when taking photos. In my exterior house example, I made mistake when I was too far(9m) from plaster wall. When the distance was 2.5m, I got perfect result(small plaster details captured in pointcloud) on walls. Your interior plaster does not have the amount of details like exterior, so you need to go closer to wall and from that reason make a change in the way of photographing the interior.

In handleWalls image I am making also oblique angles from the same photographic point(red dot is position, blue line direction). This helps to keep continuity with less moving of the tripod and also it helps reduce spikes on flat surfaces(because from perpendicular direction it is hard to tell how far is something from camera,...it is much easier from side angles).

In handleCorners I hinted how to keep continuity between walls.
HandleFurniture picture is obvious, it is simple rock photogrammetry scenario.

My workflow will create overall higher number of photos, but it potentialy has some benefits: you can try take photos from hand, with higher ISO(and keep 1/60 to avoid motion from hand), because you will be much closer to walls/objects and their details can beat the ISO noise. You can finish photoshooting sooner, because changing tripod positions can be very anoying.

You can try also switch the ceiling light on for adding some light and shadow details on plaster when shooting walls and corners.

I hinted just 3 directions from one red dot, but you will need also few up and down directions to cover all surface area.

Let us know if this kind of aproach make your result better, or thetraditional aproach is better for interior.  ;)

Bzuco

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Re: Shooting interior with Nikon D5300
« Reply #5 on: October 28, 2022, 10:28:37 AM »
Handle furniture

Paulo

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Re: Shooting interior with Nikon D5300
« Reply #6 on: October 28, 2022, 05:52:00 PM »
what's your use of the scan? a basic model to use as a reference for further modelling or do you need a high quality scan?

one issue will be if you have a white ceiling with little definition

JJ, our scans  are for eventually to generate precise point clouds of the interior of a Paper Plant. I agree with you that white even colored walls and ceiling are really not good for photogrammetry...

Thanks for your input :)
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Paul Pelletier,
Surveyor

Paulo

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Re: Shooting interior with Nikon D5300
« Reply #7 on: October 28, 2022, 07:14:57 PM »
Hi Paulo,

I am guessing you were ~4m far from wall when taking photos. In my exterior house example, I made mistake when I was too far(9m) from plaster wall. When the distance was 2.5m, I got perfect result(small plaster details captured in pointcloud) on walls. Your interior plaster does not have the amount of details like exterior, so you need to go closer to wall and from that reason make a change in the way of photographing the interior.

In handleWalls image I am making also oblique angles from the same photographic point(red dot is position, blue line direction). This helps to keep continuity with less moving of the tripod and also it helps reduce spikes on flat surfaces(because from perpendicular direction it is hard to tell how far is something from camera,...it is much easier from side angles).

In handleCorners I hinted how to keep continuity between walls.
HandleFurniture picture is obvious, it is simple rock photogrammetry scenario.

My workflow will create overall higher number of photos, but it potentialy has some benefits: you can try take photos from hand, with higher ISO(and keep 1/60 to avoid motion from hand), because you will be much closer to walls/objects and their details can beat the ISO noise. You can finish photoshooting sooner, because changing tripod positions can be very anoying.

You can try also switch the ceiling light on for adding some light and shadow details on plaster when shooting walls and corners.

I hinted just 3 directions from one red dot, but you will need also few up and down directions to cover all surface area.

Let us know if this kind of aproach make your result better, or thetraditional aproach is better for interior.  ;)

Hi Bzuco,

Thanks a lot for such detailed answer! Very helpful to get in closer to get better detail on white uniform walls.. Taking a few shots in different directions will help but may introduce not best matching between images taken from same spot because of awful base to distance ratio (reconstruction uncertainty in Metashape).
I am curious for your house model, what camera did you use and with what settings?

Best Regards,
Paul Pelletier,
Surveyor

Bzuco

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Re: Shooting interior with Nikon D5300
« Reply #8 on: October 29, 2022, 11:25:16 AM »
I am using Canon EOS M10 and default lens 15-45mm https://www.dpreview.com/products/canon/slrs/canon_eosm10/specifications

In the past I used F7-11 aperture numbers, but for last several projects only F5.6, because it gives me enough depth of field and better shutter speed during cloudy weather. Aperture priority mode with fixed ISO 100 or 200 if speed drops under 1/100s. I am always using manual focus, because it saves battery life and because I am keeping the same distance from walls.  I am refocusing if it is needed. Thanks to Canon Hack Development Kit firmware I can see red dots on LCD display in parts which are focused.

I see in gradual selection tool plenty of reconstruction uncertainty points, but still those shots from oblique angles gives me some kind of support in case I would loose continuity with only perpendicular shots. I am using photos as a background in my visualizations, so only perpendicular shots would be useless for me.

Paulo

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Re: Shooting interior with Nikon D5300
« Reply #9 on: October 29, 2022, 05:10:53 PM »
Bzuco,

great documentation on interior image taking. You should write up a tutorial. A dummy's question for you: in aperture priority how do you fix the iso to 200 or 400? I thought that in aperture priority, the camera woud determine by itself the exposure time and ISO. Or is there a Aperture/ISO priority?

Thanks again a million for your thoughtful explanations!
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Paul Pelletier,
Surveyor

Bzuco

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Re: Shooting interior with Nikon D5300
« Reply #10 on: October 29, 2022, 05:21:35 PM »
On canon you can set ISO to auto or manual any value, it is independent from any priority shooting mode. It is different on your Nikon?

Paulo

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Re: Shooting interior with Nikon D5300
« Reply #11 on: October 29, 2022, 05:52:42 PM »
Thanks Bzuco,

I will have to check on the Nikon as it is someone else's that I am testing... should be the same... will come back after some testing in the back patio.
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Paul Pelletier,
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Paulo

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Re: Shooting interior with Nikon D5300
« Reply #12 on: October 29, 2022, 07:01:34 PM »
Hello again,

I did another test in the outside back patio with f/8 AP, iso around 400 and still image quality is awful....
Code: [Select]
2022-10-29 10:30:03 Finished processing in 81.212 sec (exit code 1)
2022-10-29 10:30:03 ----------------------------------------------------------------------------------------
2022-10-29 10:30:03 ID                             Calidad         TiempoExp       Apertura        ISO           
2022-10-29 10:30:03 - DSC_9633                     0.288033        1/100           8.0             400           
2022-10-29 10:30:03 - DSC_9634                     0.282031        1/59            8.0             400           
2022-10-29 10:30:03 - DSC_9635                     0.288574        1/80            8.0             400           
2022-10-29 10:30:03 - DSC_9636                     0.280435        1/59            8.0             400           
2022-10-29 10:30:03 - DSC_9637                     0.287762        1/200           8.0             400           
2022-10-29 10:30:03 - DSC_9638                     0.384256        1/125           8.0             400           
2022-10-29 10:30:03 - DSC_9639                     0.374301        1/40            8.0             400           
2022-10-29 10:30:03 - DSC_9640                     0.410381        1/50            8.0             400           
2022-10-29 10:30:03 - DSC_9641                     0.294874        1/40            8.0             400           
2022-10-29 10:30:03 - DSC_9642                     0.399954        1/50            8.0             400           
2022-10-29 10:30:03 - DSC_9643                     0.366257        1/59            8.0             400           
2022-10-29 10:30:03 - DSC_9644                     0.424023        1/59            8.0             400           
2022-10-29 10:30:03 - DSC_9645                     0.285888        1/50            8.0             400           
2022-10-29 10:30:03 - DSC_9646                     0.411012        1/80            8.0             400           
2022-10-29 10:30:03 - DSC_9647                     0.407838        1/50            8.0             400           
2022-10-29 10:30:03 - DSC_9648                     0.338918        1/30            8.0             560           
2022-10-29 10:30:03 - DSC_9649                     0.320372        1/30            8.0             900           
2022-10-29 10:30:03 - DSC_9650                     0.317503        1/30            8.0             900           
2022-10-29 10:30:03 - DSC_9651                     0.350439        1/30            8.0             800           
2022-10-29 10:30:03 - DSC_9652                     0.321712        1/30            8.0             1000           
2022-10-29 10:30:03 - DSC_9653                     0.284981        1/30            8.0             500           
2022-10-29 10:30:03 - DSC_9654                     0.266375        1/40            8.0             400           
2022-10-29 10:30:03 - DSC_9655                     0.255186        1/59            8.0             400           
2022-10-29 10:30:03 - DSC_9656                     0.288809        1/80            8.0             400           
2022-10-29 10:30:03 - DSC_9657                     0.25405         1/80            8.0             400           
2022-10-29 10:30:03 - DSC_9658                     0.251781        1/100           8.0             400           
2022-10-29 10:30:03 - DSC_9659                     0.266466        1/125           8.0             400           
2022-10-29 10:30:03 - DSC_9660                     0.231786        1/200           8.0             400           
2022-10-29 10:30:03 - DSC_9661                     0.264333        1/160           8.0             400           
2022-10-29 10:30:03 - DSC_9662                     0.345985        1/40            8.0             400           
2022-10-29 10:30:03 - DSC_9663                     0.333221        1/200           8.0             400           
2022-10-29 10:30:03 - DSC_9664                     0.29029         1/160           8.0             400           
2022-10-29 10:30:03 - DSC_9665                     0.314721        1/100           8.0             400           
2022-10-29 10:30:03 - DSC_9666                     0.22891         1/59            8.0             400           
2022-10-29 10:30:03 - DSC_9667                     0.256343        1/125           8.0             400           
2022-10-29 10:30:03 - DSC_9668                     0.262288        1/100           8.0             400           
2022-10-29 10:30:03 - DSC_9669                     0.299679        1/125           8.0             400           
2022-10-29 10:30:03 - DSC_9670                     0.265173        1/80            8.0             400           
2022-10-29 10:30:03 ----------------------------------------------------------------------------------------
2022-10-29 10:30:03 Calidad Imagen Promedia = 0.31, Tiempo Exposicion Promedio = 1/82, Apertura Promedia = 8.00, ISO Promedio = 459.47
Remote shoot using my smart phone with tripod.... Any explanation for this?  as I am thinking that his Nikon is just not good. I will probably be continuing my tests using a Ricoh GR 16 Mpix APS C image format, fixed focal 18.3 mm. However the alignment is much better than interior test. Note the patio is rectangular and there is quite a bit of noise in one corner. See attachment.

Best Regards,
Paul Pelletier,
Surveyor

Bzuco

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Re: Shooting interior with Nikon D5300
« Reply #13 on: October 29, 2022, 08:04:34 PM »
At some point if you increase aperture value, overall image started to be less sharper...could be this the reason of low image quality?
Some sweet spot between image sharpness/depth of field and image quality is ~F7-11 , but it depends on lens. Can you also check that your lens and camera can produce sharp image(no focus issue) in day light condition?

Make some test: shoot series of images(e.g. news paper page with small letters) and change the  F number from min. to e.g. 15. Check the sharpness in corners(and also chromatic aberation) and overall image sharpness. Choice the F number when you will be satisfied with corners(no chromatic aberation) but also overall sharpnes in the middle.

My test is on business card and lens is able to still achieve sharpnes in the middle and also in corners around F number 7-8. After F11 and more, overall image is less sharp.

Bzuco

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Re: Shooting interior with Nikon D5300
« Reply #14 on: October 29, 2022, 08:12:44 PM »
Your bottom corner is captured only on two photos and with very similar angles -> not enough information to calculate correct depth of points. You need to care more about corners :P
The aproach is the same for concave and convex corners.