Sanmati Forensic Science Lab

Sanmati Forensic Science Lab provides scientifically validated forensic examination services in audio, video, and photographic evidence analysis for courts, law enforcement agencies, advocates, corporate investigations, and private clients.

Our laboratory follows internationally accepted forensic methodologies while maintaining strict chain of custody and legal compliance under Indian law.

Forensic Video Examination

Forensic video examination is the scientific analysis, authentication, enhancement, and interpretation of video recordings for legal purposes. It is widely used in criminal investigations, civil disputes, accident reconstruction, and court trials.

Objectives of Video Examination

1️⃣ Authentication

• Detection of video tampering
• Frame insertion or deletion
• Splicing and re-encoding artifacts
• Deepfake manipulation detection
• Metadata inconsistency analysis

2️⃣ Enhancement

• Brightness & contrast adjustment
• Noise reduction
• Sharpness correction
• Color balancing
• Video stabilization
  (All enhancement is non-destructive and documented.)

3️⃣ Clarification & Analytical Services

• Face comparison
• Vehicle identification
• Height estimation
• Gait analysis
• Object tracking
• Timeline reconstruction

4️⃣ Audio-Video Synchronization

• Lip-sync verification
• Detection of dubbing or overlay

5️⃣ Source Identification

• CCTV system identification
• Mobile device source analysis
• DVR/NVR model examination
• Compression format study

Scientific Methodology

1. Evidence seizure & chain of custody documentation
2. Forensic imaging with hash verification (MD5/SHA256)
3. File structure & codec analysis
4. Metadata examination
5. Frame-by-frame pixel analysis
6. Authentication testing
7. Detailed forensic report with expert opinion

Forensic Audio Analysis

Forensic audio analysis involves scientific examination, authentication, enhancement, and voice comparison of recorded audio for legal proceedings.

Major Services

1️⃣ Audio Authentication

• Edit & splice detection
• ENF (Electrical Network Frequency) analysis
• Compression artifact examination
• Metadata verification

2️⃣ Audio Enhancement

• Noise reduction
• Hum & hiss removal
• Voice clarity improvement
• Spectral repair

3️⃣ Speaker Identification / Voice Comparison

• Spectrographic comparison
• Pitch & formant analysis
• Linguistic & phonetic evaluation
• Automatic Speaker Recognition (ASR)

4️⃣ Audio Transcription

• Accurate transcript preparation
• Speaker identification
• Timestamp marking
• Court-ready documentation

5️⃣ Gunshot & Environmental Analysis

• Gunshot distance estimation
• Background sound identification
• Acoustic event comparison

Forensic Photo / Image Examination

Forensic photo analysis is the scientific examination and evaluation of digital images to determine authenticity, manipulation, and evidentiary value.

Services Offered

1️⃣ Image Authentication

• Photoshop manipulation detection
• Cloning & splicing detection
• AI-generated image detection
• Deepfake identification

2️⃣ Image Enhancement

• Deblurring
• Noise reduction
• Color correction
• Shadow detail recovery

3️⃣ Facial & Object Comparison

• Morphological facial comparison
• Ear biometrics
• Tattoo/scar comparison
• Vehicle & object identification

4️⃣ Photogrammetry

• Height estimation
• Distance measurement
• Angle & speed analysis

5️⃣ Metadata & Source Analysis

• EXIF extraction
• Camera model identification
• GPS location data
• Editing software traces

Legal Compliance

All examinations are conducted in accordance with:

• Section 63 – Bharatiya Sakshya Adhiniyam, 2023 (Digital Evidence)
• Mandatory chain of custody protocols
• Hash verification requirements
• Expert opinion admissibility under Section 39 – Bharatiya Sakshya Adhiniyam, 2023

Our reports are prepared in court-admissible format and experts are available for testimony when required.