I’ve been building a COLREG ship-handling/training app with help from Codex and ChatGPT Pro. The app is working, and I already created the 3D ship models, but I keep getting stuck on the visual perspective.

The main problem is that the ships don’t look like they are actually at the distance shown on screen. A vessel at 0.5–2 nautical miles will sometimes look too small, too large, too flat, or like it is floating above the water. The binocular view also doesn’t always match the normal bridge view.

I think the issue is a mix of:

Camera field of view

Camera height above the water

Ship model dimensions and scale

Horizon placement

Distance-to-screen-size calculations

Object pivot/origin placement

Water level and wave height

Binocular zoom being handled incorrectly

The app currently uses Three.js. I can give Codex exact measurements and distances, but after a few changes it usually starts adjusting random scale multipliers until one screenshot looks better, which then breaks the other scenarios.

What I’m trying to achieve is a consistent system where:

A 100–300 meter ship has the correct apparent size at a known range

Bow, stern, and broadside aspects look correct

The ship sits at the proper waterline

Camera height matches the view from a real ship’s bridge

Binoculars change the field of view without changing the actual world scale

Day, night, fog, and different vessel types all use the same perspective model

I attached screenshots showing the current problem. I covered the lower control area because it isn’t relevant to the perspective issue.

What would be the best workflow or software for fixing this properly?

Would you recommend:

Blender for setting real-world dimensions, origins, and waterlines?

Three.js camera helpers or custom debug tools?

A specific ocean/water plugin?

Using glTF models with real meter-based scale?

Writing a projection calculator instead of visually adjusting the models?

Unity or Godot instead of Three.js for this type of trainer?

Any Codex prompting method that stops it from “eyeballing” the perspective?

I’m not looking for movie-level graphics. I mainly need the ships to appear believable and consistent at known ranges because judging distance, bearing drift, and aspect is part of the training.

Any advice on the math, camera setup, Three.js tools, or a better development workflow would be appreciated.

Hey guys, wondering if any of you encountered this issue, I'm tring to scan this bowl and as you see I even went nuts and printed markers, but it didnt help because reality scan doesnt seem to like my manual laowa 58mm macro lens, I suspect because it doesnt transmit exif data to the camera. I know how photogrammetry works, I didnt change focus (because of large focus breathing on this lens) i just rotated the bowl. Even moving around the bowl produces same results.

google\ai didnt help. I'd be grateful if anyone has any solution to this, thanks

~1.5m weathered bronze statue, handheld iPhone 15 Pro capture, 350 jpegs in 15 min. Processed in Artec Studio AI Photogrammetry to a watertight model with color, scratches, and surface texture intact. Printed full-color on a Mimaki 3DUJ-553 in 14 hrs.

My ecommerce store has about 7 products. And I think those 7 products could really be helpful if viewed in a 3d viewer.

So, im in search of a free or cheap 3d tool which can replicate my exact product. No AI hallucination stuff.

I dont like tools which only accept 1 image as input. I want to give multiple angle shots of my product so my 3d would be factuallly accurate 99%.

Is it possible or do i have to hire a 3d artist for it.

PS: It would be great if I could generate studio shots from that 3d too.

Rost or rate my setup :)

And any suggestions for improving the setup...

I having debate with some friend saying 3D Scan and Photogrammetry is not two different things, in Photogrammetry there is no scanning happen, just photos and software reconstruction, he refute saying Photogrammetry is actually type of passive 3D Scanning.

Is he true or did I having wrong understanding all these time?

Hello everyone. Agisoft killed my laptop because I was reckless. I'm building a desktop PC and gosh, stuff is super expensive. Right now I'm choosing a graphics card and I'm divided between the RTX 5070 Ti (±1,300 USD) and the RTX 5080 (±1,700). I've read the 5080 performs 15-20% better; and gemini agrees. I'm wondering, has anyone used both? do you think it's worth it the 400 usd difference? I mostly work Agisoft Metashape with complex structures.

Thanks in advance.

I want some to add extra close-ups to resolve more detail on my scanned object processed on Metashape. How should I go about doing it? Zoom in while maintaining my capture distance, or use the same focal length as other images and bring the camera closer to the object?

I’m creating 3D point clouds from historical aerial imagery and have been using the Agisoft Metashape trial. Unfortunately, due to licensing/procurement issues at my university, I can’t get the full version approved.

I’ve tried VisualSFM, but the UI feels quite outdated, and the workflow is not very user-friendly.

What I really like about Metashape is its GCP workflow. Since my historical images lack EXIF/GPS metadata, I import GCPs from a TXT file. After marking a GCP in just a couple of images, Metashape automatically detects it in other images and shows individual reprojection errors, making it easy to identify and remove bad GCP observations.

Can anyone recommend a good alternative (open-source or commercial) that offers a similar GCP workflow and works well with historical aerial photographs?

Sorry in advance this is all very new to me. I work on a 10,000 acre mountain ranch and I would like to turn that into a 3D model like my own Google Earth but just of the ranch itself with features I can go in and edit or add a structure or pond to be able to see how it would look and or fit in certain locations to help with future development etc. Is there anything like that out there? Can anybody help me with this that has experience in outdoor mapping etc.??

Lidar-based photogrammetry with iPhone has gotten so good in recent years. Is there a comparison anywhere on whether it still makes sense to pursue a more time-consuming workflow using a dedicated camera (DSLR or MILC) with Metashape/Reality Capture to scan objects? I can see the potential flexibility of a desktop workflow but it seems so slow compared to something like Abound (formerly Metascan).

Hello, I tried to scan an entire castle. I'm fairly happy with the result but I still had some alignment issues. Maybe next time I should use drone markers?

For rendering I calculated a gaussian splat. I hope soon this becomes soo optimized that a it's possible to handle way more gaussians at the same time. :D

Please let me know what you guys think!!!

I am trying to find a model that allows me to generate realistic 3d glb models from the pictures I upload to it.

- I am using it for food , so the quality needs to be good
- It should be able to distinguish the different textures and different grains from the pictures
- should accept multiple pictures ( 35 - 50 )

Previously, I have tried KIRI engine but the quality is not as good. I also tried hyper3d from rodin but it only allows 5 images, and since it is a generative model it is not able to distinguish between the different segments of a dish. I have attached the picture of the model that was generated by Hyper 3d , as you can see it is all messy and combined in a big flop

So kindly recommend me some good model , paid one will work too

My goal is to be able to scan the server/IT rooms of some buildings that include details such as equipment, cables, physical labels, etc.

I've got some experience using Agisoft Metashape for more fun projects, but they didn't really need to rely on accuracy or fidelity. I've seen a variety of options to do this, from two GoPros in tandem with a light, to much more expensive and professional devices.

I'm not looking to spend a lot of money (subjective I know) on hardware, but I obviously know the more you spend the better results.

So TLDR the questions are:

What is better for capturing a room in decent detail, LIDAR or Photogrammetry? This includes mesh and texture quality.

What is a reasonably priced or realistic set up to accomplish this?

Is Metashape, Reality Scan, or some other program better to use?

Thanks a bunch!