Tripo 3D: How to Turn an Image into a 3D Model for Three.js

In the author’s demonstration, Tripo 3D was used to generate a 3D model from an image. The process in this example looked like this: prepare the source image, generate views of the object, create the model, export it as a GLB, and test it in a Three.js project.

The author used this approach to build a web scene prototype from separate objects. The resulting model should be inspected: in the test, generation distorted the shape and joined parts of neighboring objects.

How the Tripo 3D process works

In the process described by the author, an image was first created from a text prompt. The service then generated multiple views of the object from the front, back, left, and right, and used those images to build a three-dimensional model.

In the demonstration test, the author started with an image of an aquarium with fish and requested views from all sides. This example shows the author’s sequence of steps, but does not allow us to assess how accurately details that are not visible in the source image were reconstructed.

Preparing the image and multi-view images

Before generating the model, it helps to decide which part of the image you plan to use. In the author’s test, the aquarium was partially cropped when the multi-view images were created. The author considered this acceptable because they mainly wanted to use the fish, plants, and rocks, and planned to reconstruct the aquarium separately.

This observation applies to one specific example and does not establish how Tripo 3D processes all images. In the same test, a fragment of a plant stuck to one fish’s tail.

Review each view before building the model. In the aquarium example, one of the views was partially cropped; this test does not support any other conclusions about how the views affected the result.

Creating a 3D model and exporting a GLB

After reviewing the views, the author started creating the model and selected the available quality settings. In the test described, they chose to generate a 8K model and then exported the result in GLB format at 4K resolution.

These values describe the settings used in one specific test. They do not confirm the geometry’s level of detail, compatibility with all projects, or suitability for production. The author tested the exported file in the target project. For your own project, assess the model’s appearance and which parts of the scene it includes.

In the workflow described, GLB served as an intermediate format: the author provided the export, together with a task description, to prepare an HTML project in Three.js. In this example, Tripo 3D was used to generate the model, while the scene was assembled separately using the web project’s tools.

Importing the model into Three.js

In the demonstration, the author placed the model in the scene and tested it alongside the project’s other elements. The specific implementation details depended on the project’s structure.

The model and scene description were provided to GPT Astra to create an HTML project with an aquarium, fish, plants, bubbles, and water. The author ran the project through a local server; the test example used the address localhost:3000. This is a local development address, not an external website or a requirement of Tripo 3D.

The author inspected the scene in motion. In your own project, you can also check whether objects intersect and whether noticeable artifacts appear as they turn. In the author’s test, the fish were given movement, and the project included an option to adjust the waves.

Aquarium animation: test results

In the demonstration they created, the author noted that the fish moved and the plants swayed, with bubbles and wave controls. The project also featured sound and light and dark themes. According to the author, the fish moved in a wave-like motion and opened their mouths.

This describes a specific prototype; it does not confirm that the exported GLB contained ready-made animation. In the test, the model was imported into a separate Three.js project, and the scene’s behavior was defined as part of that development. The author does not say whether the animation was part of the model or was implemented separately.

Generation defects and limitations

In the test, a fragment of a plant stuck to one fish’s tail. The author attributed the defect to the fish being among plants during generation. This is an observation from one example, not an established cause of similar defects in other models.

The author also speculated that the fish in the demonstration did not have collisions: at times, they bunched up into a single ball. This is their assessment of what they observed, not a confirmed test of the implementation. The author does not describe exactly how movement and collisions were configured in the project.

What should you do if a defect is only noticeable in motion? In the author’s demonstration, the fish bunched up into a single ball, but the author did not investigate the cause of this behavior. In a similar situation, you can inspect the model and the project separately to find out whether the problem lies with the geometry or the movement of the objects.

When to generate objects separately

Based on the test, the author recommended creating the fish, aquarium textures, plants, and rocks separately, then placing them in the project. They linked this recommendation to the defect where a fragment of a plant stuck to a fish’s tail. One example does not confirm that separate generation always prevents such defects.

Separate generation means assembling the composition yourself. The author suggests this option when independent scene elements are needed. The test also used a complete aquarium image; which approach is suitable for another project depends on its purpose.

What to check before using the model

• Compare all four views and check that no necessary parts of the object have been cropped.
• Inspect the model from all sides and look for stray fragments, fused elements, and noticeable distortions.
• Open the exported GLB in the target project and assess the model alongside the other assets.
• Check animation, movement, and collisions separately. In the author’s demonstration, these elements are described as part of a separate Three.js project.
• For a complex scene, consider using separate models for the fish, plants, rocks, and aquarium elements. The author recommended this option based on their test.

Final workflow for Tripo 3D

In the author’s test, the process consisted of sequential stages: prepare an image, create multi-view images, assess the views, generate a model, export it as a GLB, and integrate it into a Three.js scene. Checking each stage helped the author spot the cropped aquarium and the defect involving a fragment of a plant.

In the author’s test, the imported fish seemed more detailed and realistic than fish created by GPT Astra from a text prompt alone. This is a subjective comparison based on one example, not an independent test of the tools’ quality. For their own project, the author suggests assessing the specific models and how they behave in the target scene.