BACKSTAGE75

Nestled in the heart of Seoul, Sewoon District is a unique space where the past and present coexist. Once a bustling symbol of Korea's industrialization era, this area is now facing the winds of new development as time passes.

Amidst this vortex of change, 75mm Studio carried out a project to record the current state of Sewoon District using wide-area 3D scanning. It is an effort to permanently preserve the appearance of an area that may disappear due to development by scanning a vast target area of approximately 500,000 square meters.

Sewoon District Scan Image 02

The Value of 3D Scanning: Recording Beyond Time

3D scanning technology plays a vital role in preserving historical and cultural values that we might otherwise lose, going beyond simple recording. Through this technology, buildings, alleyways, and even traces of daily life in Sewoon District are recorded in detail. This will become a valuable asset for future generations to understand and experience Seoul of our time.

Characteristics of Sewoon District: Rediscovered in 3D

Sewoon District itself contains the history of Seoul's transformation. Every alley in this area holds stories from Korea's post-war reconstruction period to the present day, and 3D scanning sheds new light on these stories. Through scanned data, both researchers and the general public can analyze and understand Sewoon District's unique architectural styles and spatial composition.

Significance of the Project

This project goes beyond simply recording the past; it provides an opportunity to rediscover and reinterpret the unique identity and cultural value of Sewoon District. Furthermore, by recording the development and change process of this area, it offers important insights into the impact of urban development on local communities and culture.

Preserving Memories Beyond Time

The wide-area 3D scanning project of Seoul's Sewoon District is a significant attempt to permanently preserve the memories of spaces we are losing through technology. This will be a precious asset that conveys the vivid appearance of Seoul, especially Sewoon District, of our time to future generations. 3D scan data opens up new possibilities for preserving disappearing historical and cultural spaces globally, not just in Sewoon District.

Sewoon District Scan Image 03

Technical Details & FAQ

What is LiDAR scanning and how is it used in VFX?

LiDAR (Light Detection and Ranging) is an ultra-precise 3D scanning technology that uses laser pulses to measure spatial distances. In modern VFX pipelines, precise geometry data acquired through LiDAR ensures that computer-generated CGI environments match physical movie sets with zero margin of error. This maximizes the accuracy of camera matchmoving and virtual set extensions, drastically reducing post-production turnaround times.

How does 75mm Studio process massive Point Cloud data?

Raw point cloud data acquired on-site consists of billions of points, making it too heavy for standard DCC software like Maya or Unreal Engine. We run the raw data through an advanced proprietary processing pipeline that involves point registration, aggressive noise reduction, and topological lightweighting. Ultimately, the dense point cloud is converted via meshing and retopology into an optimized, highly manageable polygonal asset.

What is the primary difference between Photogrammetry and LiDAR?

While LiDAR structural scanning focuses on calculating exact physical dimensions with millimeter accuracy (the 'skeleton'), Photogrammetry focuses strictly on generating photorealistic visual textures (the 'skin'). At 75mm Studio, we employ a hybrid workflow combining the undeniable millimeter-accuracy of laser scanning with the hyper-realistic optical fidelity of photogrammetry.

Why is 3D Gaussian Splatting revolutionary for spatial archiving?

3D Gaussian Splatting is a breakthrough AI-based neural rendering technique that bypasses the limitations of traditional polygonal rendering. It easily captures incredibly complex micro-details such as translucent objects, fine foliage, and specularity. Moreover, it achieves this extreme photorealism while maintaining real-time 60fps render performance, even directly within a web browser, making it the ultimate game-changer for digital twin distribution.