Batsirai Muvimi

Key Skills

Software

CVAT

Top Subject Matter

Object Detection/Computer Vision

Speech/Audio Processing

Data Quality Assurance

Top Data Types

Image

Audio

Text

Top Task Types

Bounding Box

Transcription

Classification

Object Detection

Freelancer Overview

Image Annotation Project — Personal / Coursework. Brings 6+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include CVAT, N, and A. Education includes Bachelor of Science, Telone (2023). AI-training focus includes data types such as Image and Audio and labeling workflows including Bounding Box, Transcription, and Evaluation.

Labeling Experience

Data QA Workflow — Personal / Coursework

Image

Created Python validation scripts to check for missing labels, format inconsistencies, and duplicate entries in labeled datasets. Reduced dataset errors by 40% through systematic evaluation and correction cycles. Ensured accurate metadata and data integrity through rigorous review processes. • Programmed and executed custom Python scripts for QA tasks • Evaluated datasets for completeness and annotation consistency • Flagged, corrected, and documented dataset errors in real-time • Reported on QA outcomes to improve future annotation workflows

Created Python validation scripts to check for missing labels, format inconsistencies, and duplicate entries in labeled datasets. Reduced dataset errors by 40% through systematic evaluation and correction cycles. Ensured accurate metadata and data integrity through rigorous review processes. • Programmed and executed custom Python scripts for QA tasks • Evaluated datasets for completeness and annotation consistency • Flagged, corrected, and documented dataset errors in real-time • Reported on QA outcomes to improve future annotation workflows

2023 - 2023

Audio Transcription Practice — Personal / Coursework

AudioTranscription

Transcribed and time-aligned short audio clips focusing on speech and speaker turn annotation. Applied consistent transcription standards across multiple samples for quality and accuracy. Verified label consistency and addressed discrepancies through multiple review cycles. • Transcribed speech and annotated speaker turns in short audio files • Performed manual transcription and alignment using familiar platforms • Reviewed and compared outputs for accuracy and reliability • Focused on maintaining consistent quality control in all tasks

Transcribed and time-aligned short audio clips focusing on speech and speaker turn annotation. Applied consistent transcription standards across multiple samples for quality and accuracy. Verified label consistency and addressed discrepancies through multiple review cycles. • Transcribed speech and annotated speaker turns in short audio files • Performed manual transcription and alignment using familiar platforms • Reviewed and compared outputs for accuracy and reliability • Focused on maintaining consistent quality control in all tasks

2023 - 2023

Image Annotation Project — Personal / Coursework

CVATImageBounding Box

Labeled over 2,000 images for object detection tasks using bounding boxes and class labels with CVAT and LabelImg. Maintained strict label consistency and produced label guidelines to ensure inter-annotator agreement above 95%. Ensured high dataset quality through systematic annotation and organization. • Used CVAT and LabelImg to annotate images for object detection • Developed internal documentation and label guidelines • Maintained annotation consistency and performed accuracy reviews • Collaborated for quality assurance and error reduction

Labeled over 2,000 images for object detection tasks using bounding boxes and class labels with CVAT and LabelImg. Maintained strict label consistency and produced label guidelines to ensure inter-annotator agreement above 95%. Ensured high dataset quality through systematic annotation and organization. • Used CVAT and LabelImg to annotate images for object detection • Developed internal documentation and label guidelines • Maintained annotation consistency and performed accuracy reviews • Collaborated for quality assurance and error reduction

2023 - 2023

Education

Work History