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Newman Projections

Newman Projections

Different notations are used to represent the three-dimensional structure of molecules on two-dimensional surfaces. One of the most commonly used representations is the dash-wedge formula. The dashed wedges, solid wedges, and the plane lines indicate the groups situated behind the plane, coming out of the plane, and in the plane, respectively.
The organic molecules rotate across the single bonds leading to numerous temporary three-dimensional structures of varying energy known as...

Fischer Projections

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Learning to draw Fischer projections of molecules and understanding their relevance plays a crucial role in the visual depiction of organic molecules. A Fischer projection is a two-dimensional projection on a planar surface to simplify the three-dimensional wedge–dash representation of molecules. This is especially helpful in the case of molecules with multiple chiral centers that can be difficult to draw. Here, all the bonds of interest are represented as horizontal or vertical lines.

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Micro 3D Printing Using a Digital Projector and its Application in the Study of Soft Materials Mechanics

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LAPIG: Language Guided Projector Image Generation with Surface Adaptation and Stylization.

Yuchen Deng, Haibin Ling, Bingyao Huang

IEEE Transactions on Visualization and Computer Graphics

|March 17, 2025

Summary

We introduce LAPIG, a novel method for generating projector images guided by text prompts. This technique adapts to textured surfaces, minimizing visual artifacts for enhanced style transfer and visually pleasing effects.

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Area of Science:

Computer Vision
Computer Graphics
Image Processing

Background:

Projector-based style transfer faces challenges with surface textures and projector limitations, causing artifacts.
Existing compensation techniques struggle to eliminate these visually distracting artifacts.

Purpose of the Study:

To develop a language-guided projector image generation method that minimizes surface artifacts.
To enable visually pleasing surface style morphing effects through text prompts.

Main Methods:

Proposed Projection Surface Adaptation (PSA) for compensable surface stylization.
Trained networks to simulate projector compensation and capture processes for efficient image generation.
Utilized gradient descent for fast convergence and designed content/saturation losses to prevent artifacts.

Main Results:

Generated projector images that minimize perceivable artifacts on textured surfaces.
Achieved visually pleasing surface style morphing effects based on text prompts.
Demonstrated a method for artifact-free projector image generation without real-time capture.

Conclusions:

LAPIG effectively addresses the challenge of generating artifact-free projector images guided by text.
The proposed Projection Surface Adaptation (PSA) enables robust style transfer onto textured surfaces.
This method opens new possibilities for dynamic and interactive surface stylization.