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P
Pbin L.

Pbin L.

Semantic Segmentation Annotator – Sendai City Satellite Imagery Project

Japan flagmorioka, Japan

Key Skills

Software

Other

Top Subject Matter

Urban mapping
remote sensing
disaster response

Top Data Types

ImageImage

Top Task Types

SegmentationSegmentation
Fine-tuningFine-tuning

Freelancer Overview

Semantic Segmentation Annotator – Sendai City Satellite Imagery Project. Brings 1+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other. Education includes Master of Design and Media Engineering, Iwate University (2024) and Bachelor of Science, Central South University of Forestry and Technology (2023). AI-training focus includes data types such as Geospatial, Tiled Imagery, and Computer Code and labeling workflows including Segmentation and Fine-tuning.

Labeling Experience

Cybersecurity LLM Fine-tuning Data Annotator

OtherFine-tuningFine-tuning

I contributed to the fine-tuning of a Cybersecurity Large Language Model (LLM) for code and vulnerability analysis tasks. The project involved supervised domain-specific instruction and reinforcement to optimize the LLM's security, accuracy, and automation capabilities. I focused on preparing curated code datasets and annotating them for vulnerability detection, automated penetration testing, and multi-agent task orchestration. • Implemented prompt engineering and SFT (Supervised Fine-Tuning) methods for code examples. • Designed instructions and responses for code analysis and security testing. • Evaluated model output accuracy and provided RLHF-based feedback. • Utilized domain knowledge in cybersecurity to craft annotated data and prompts.

2026 - Present

Semantic Segmentation Annotator – Sendai City Satellite Imagery Project

OtherSegmentationSegmentation

I performed semantic segmentation of high-resolution satellite imagery covering Sendai City. My work involved identifying and distinguishing between roads, vegetation, buildings, and vehicles to generate pixel-level annotated maps for use in urban planning and disaster response. This process required labeling large volumes of complex geospatial data using deep learning and fine-tuning techniques. • Used Python and PyTorch for annotation and model training. • Applied LoRA fine-tuning on Vision Transformer (ViT) models for segmentation tasks. • Generated high-quality labeled datasets to aid city planners and emergency responders. • Ensured data quality by validating and correcting uncertain segment boundaries.

2024 - 2024

Education

C

Central South University of Forestry and Technology

Bachelor of Science, Information and Computing Science

Bachelor of Science
2019 - 2023
I

Iwate University

Master of Design and Media Engineering, Design and Media Engineering

Master of Design and Media Engineering
2024

Work History

H

Hunan Kechuang Information Technology

Java Development Engineer

Changsha
2023 - 2023