AllYouCanTech

A group of Apple researchers has created a novel framework that facilitates high-resolution 3D scene rendering with significantly improved efficiency. Below are the specifics of the recent study.

### Some Background

In a recent study entitled “Less Gaussians, Texture More: 4K Feed-Forward Textured Splatting,” a team of researchers from Apple and Hong Kong University present a new framework, aptly named LGTM.

In their research, the team elaborates that as resolution rises, current feed-forward 3D Gaussian Splatting techniques swiftly become too costly to execute, rendering high-resolution scenes progressively impractical.

Feed-forward 3D Gaussian Splatting is a method by which an AI model rapidly converts one or a handful of images into a 3D scene that can be viewed from various perspectives.

Feed-forward 3D Gaussian Splatting is distinct from per-scene optimization techniques, which construct each scene individually, stepwise. Though they typically require more time to process, they usually yield more consistent outcomes.

Thus, while those traditional methods may devote more time to fitting a specific scene, feed-forward techniques operate at much greater speeds, although current iterations struggle to scale up to higher resolutions.

### LGTM

To resolve this issue, the researchers advocate for the LGTM framework, which “decouples geometric complexity from rendering resolution.”

In simpler terms, it separates the scene’s structure from its visual intricacies, enabling the system to maintain straightforward geometry while employing textures to introduce high-resolution details.

Crucially, LGTM is not an independent model. Instead, it enhances existing feed-forward approaches by improving how they depict detail through the addition of texture predictions atop their geometry.

The approach taken involved two main strategies:
1. The model was trained to understand the scene’s structure using low-resolution images, then the output was compared against high-resolution ground truth. This encouraged the model to learn how to produce geometry that still appeared correct, even when rendered at 2K or 4K, circumventing gaps or artifacts.
2. A secondary network was introduced, concentrating on appearance. It takes high-resolution images and develops intricate textures for each geometric component, effectively layering detailed visual elements over the simpler geometry derived from the first model.

The outcome is a framework capable of upgrading current systems to create intricate 4K scenes without the exponential increase in computational requirements that has hindered previous feed-forward techniques at elevated resolutions.

### Implications for Products like the Apple Vision Pro

At present, Apple Vision Pro features two displays with approximately 23 million pixels combined, translating to more pixels per eye than a 4K television.

As indicated by the study, feed-forward 3D Gaussian Splatting encounters challenges at those resolutions. While the displays can accommodate it, generating the scene promptly and accurately poses a computational challenge.

LGTM may help mitigate that in the Apple Vision Pro, which could in turn provide smoother performance and clearer visuals in scenarios requiring feed-forward 3D Gaussian Splatting.

In practical terms, this could lead to enhanced experiences in detailed, immersive environments or more lifelike passthrough scenarios, all while maintaining manageable processing demands.

To witness LGTM in operation, visit the project page. It highlights techniques such as NoPoSplat, DepthSplat, and Flash3D, both with and without LGTM, across single-view and dual-view inputs.

Exploring the sample videos and images makes it clear how LGTM aids in generating outcomes that are significantly richer in detail (especially in textures and texts) and more aligned with the ground truth images.

# iOS 26.4: Fresh Customization Options for Your iPhone

iOS 26.4 has officially arrived, introducing numerous new features, including three innovative ways to personalize your iPhone. Here’s what’s new.

## 1. ‘Reduce Bright Effects’ Lowers Flashy Visual Elements

For those who aren’t fond of iOS 26’s Liquid Glass design, the ideal way to tone it down is through the existing ‘Tinted’ option found in Settings ⇾ Display & Brightness ⇾ Liquid Glass. However, if you’re seeking further adjustments, iOS 26.4 adds a new ‘Reduce Bright Effects’ option.

You can locate the toggle under Settings ⇾ Accessibility ⇾ Display & Text Size. Activating it will, according to Apple:

> Minimize highlighting and flashing when engaging with on-screen elements, like buttons or the keyboard.

You can view examples of the impact it makes [here](https://9to5mac.com/2026/03/09/ios-26-4s-new-setting-lets-you-disable-another-liquid-glass-effect/). Whether you enjoy Liquid Glass or prefer to avoid it, you may find the ‘Reduce Bright Effects’ option more to your liking.

## 2. Automate Various iPhone Battery Charge Limits

Your iPhone comes equipped with a battery feature dubbed ‘Charge Limit.’ This allows you to establish a maximum charge limit from 80-100% of total battery capacity. The concept behind this feature is that maintaining a lower charge limit can enhance your battery’s longevity.

With iOS 26.4, Apple introduces a new functionality to personalize your iPhone’s charge limit through automation. The Shortcuts app now includes a ‘Set Battery Charge Limit’ action, applicable in various straightforward or intricate shortcuts.

One of its most compelling applications is through the Automation feature in Shortcuts. After creating a shortcut with the new charge limit action, you can have your battery automatically charge to different levels based on various factors such as being home or away, connected to Wi-Fi or utilizing 5G, and much more.

## 3. Personalize Video Subtitle Styles

The default video player in iOS 26.4 features a new option: the capability to customize subtitle styles. Whether you’re viewing content in Safari, the Apple TV app, or any other app that utilizes the default player, you’ll now find a Style option within the Subtitles menu.

Available styles include:

– Classic
– Large Text
– Outline Text
– Transparent Background

Additionally, there’s a ‘Manage Styles’ button that allows for further customization of subtitle appearance. This leads you to the Accessibility section in Settings, where subtitle style options were previously obscured.

Are you utilizing any of the new customization features in iOS 26.4 for iPhone? Share your thoughts in the comments.

Apple has begun informing developers of their status in the WWDC attendance lottery. Apple revealed its Worldwide Developers Conference on March 23, allowing developers one week to indicate their interest in attending in person.

### Apple will unveil iOS 27 at WWDC in June

WWDC 2026 will commence on Monday, June 8, and conclude on Friday, June 5. During the keynote address, Apple will unveil iOS 27, macOS 27, and other OS 27 releases.

Following this announcement, Apple will welcome developers for a week-long series of sessions that explore the latest technologies, including new AI tools, aimed at creating more advanced applications.

For developers, participating in WWDC presents a special chance to engage with Apple engineers face-to-face. Consequently, the high demand for attendance has necessitated the introduction of a lottery system about ten years ago.

Instead of selling out almost immediately, Apple allows developers a week to indicate their interest in attending. Those who are chosen randomly then have the opportunity to proceed with purchasing a ticket. Should they refuse, the lottery system persists, providing some who missed out with a second chance to attend.