LDRAW based positional renders of LEGO bricks - Open Research Data - Bridge of Knowledge

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LDRAW based positional renders of LEGO bricks

Description

243 different LEGO bricks renders of size 250x250 in 5 colors in 120 viewing angles stored as JPEG images. The renders are used to train neural networks for bricks recognition. All images were generated using L3P (http://www.hassings.dk/l3/l3p.html) and POV-Ray (http://www.povray.org/) tools and were based on the 3D models from LDraw (https://www.ldraw.org/) brick library with LGEO extension (https://github.com/coolo/drunken-adventure). Each brick is centered, scaled to the image size and rotated to the desired angle, the filenames are named following official LEGO brick numbering.

The bricks are rendered using the following colors [color (code)]: Black (0x4D4D4D); Blue (0x0055BF); Cyan (0xA6F2FF); Green (0x1EA03A); Red (0xF7290E).

The bricks were hand picked and consists of [LDraw Category (Number of bricks selected)]: Animal, Land (1); Bar (2); Bracket (2); Brick, Arch (1); Brick, Modified (3); Brick, Round (5); Cone (6); Dish (4); Energy Effect (1); Fence (3); Flag (1); Hinge (1); Hinge Plate (1); Minifigure, Weapon (1); Panel (4); Plate (2); Plate, Modified (11); Plate, Round (4); Plate, Round Corner (2); lope, Curved (3); Technic (3); Technic, Axle (23); Technic, Gear (1); Technic, Liftarm (2); Technic, Pin (6); Tile, Round (4); Tile, Modified (4); Turnable (1); Wedge (9); Wedge, Plate (6); Window (2); Others (124).

The directory structure is as follows: color/angle/brick_number.jpg

Sample images can be seen below.

Illustration of the publication
Illustration of the publication

Dataset file

LEGO 1.zip
623.5 MB, S3 ETag 21b9d4d3e101b471a798390ba14aa8f7-2, downloads: 71
The file hash is calculated from the formula
hexmd5(md5(part1)+md5(part2)+...)-{parts_count} where a single part of the file is 512 MB in size.

Example script for calculation:
https://github.com/antespi/s3md5
download file LEGO 1.zip

File details

License:
Creative Commons: by-nc-sa 4.0 open in new tab
CC BY-NC-SA
Non-commercial - Share-alike
Raw data:
Data contained in dataset was not processed.

Details

Year of publication:
2020
Verification date:
2020-12-17
Creation date:
2020
Dataset language:
English
Fields of science:
  • information and communication technology (Engineering and Technology)
DOI:
DOI ID 10.34808/6vrh-sj04 open in new tab
Series:
Verified by:
Gdańsk University of Technology

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