MTA (Malaysian Trash Annotation): In-The-Wild Instance Segmentation Dataset for Waste Segregation

Malaysian Trash Annotation or MTA in short is a localised instance segmentation dataset designed to address the current issue of waste segregation in Southeast Asia context. Compare with other openly-sourced dataset, MTA is heavily designed around real-world situation where it provides polygon masking to capture the exact geometry of the trash. Goal of the project:To provide COCO Segmentation formatted database that capable of distinguish between chemically distinct but visually similar material (PET material and Thermoform) and estimating position of garbage in uncontrolled situation. Dataset Statistics (As of Version: 08122025) Task: Instance Segmentation (Polygons) Classes: 13 (Material-based separation) Environment: Supermarkets (clean and ideal condition), Roadside (weathered), Food Courts (occluded/deformed). Hardware: Heterogeneous capture using 5 different devices (Oppo, Honor, Samsung, iPhone, Realme). Capture Protocol: Aspect Ratio locked at 4:3, Multi-angle (Top, Side, 45-degree) with no AI enhancements and no HDR enabled. Classes of Dataset (As of Version: 08122025) 101_PET_Bottle: Clear/Tinted bottles (Mineral water, Coke, 5kg Oil bottles). 102_HDPE_Container: Opaque rigid plastics (Detergent, Shampoo). 103_Mixed_Rigid: Thermoformed cups (Bubble tea, Yogurt tubs) - Distinct from PET Bottles. 104_Soft_Plastic: Clean LDPE films, Gardenia loaf bags (captured in both flat and knotted states). 201_Aluminum_Can: Carbonated drink cans (Smooth wall). 202_Tin_Can: Food cans (Ribbed wall, steel). 301_Cardboard: Corrugated boxes, Tissue boxes. 302_Paper: A4, Newspaper, Magazines. 303_TetraPak: Laminated cartons (Milo, Yeos, Juice). 401_Glass: Jars, Sauce bottles. 501_Contaminated: Greasy pizza boxes, dirty containers. 502_General_Trash: Ikat Tepi (fluid bags), Straws, Receipts, Wax-coated wrappers (McDonald's). 601_E_Waste: Cables, Batteries, Vapes. Devices (As of Version: 08122025) Oppo Reno 14 MY Version (OppoReno14) Samsung Note 10 MY Version (SamsungNote10) Iphone 11 MY Version (Iphone11) Honor 200 MY Version (Honor200) Realme 5s MY Version (Realme5s) Notes: Reflections: Contains samples on glass/steel tables; polygons are tightly cropped to the object, excluding ghost reflections. Deformation: Includes crushed cans and flattened bottles to simulate end-of-life object states. Localization: Features "Ikat Tepi" and "Keropok" wrappers specific to the Malaysian region.