The investigation into the Ketan Agarwal murder case is reportedly entering a more technical phase, with forensic experts now being considered to analyze key digital and video evidence.
What Is Gait Analysis?
Gait analysis is the study of how a person walks. Every individual has a slightly different walking pattern, influenced by their body structure, posture, speed, and the movement of their arms and legs. These subtle differences can sometimes be used like a biometric signature, similar to fingerprints or facial recognition. In forensic investigations, gait analysis is used by examining CCTV footage or video recordings to compare a suspect’s walking style with known reference footage.
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How Does Gait Analysis Work?
Forensic experts typically follow a structured approach:
- Video Collection: CCTV or mobile footage showing the suspect walking is collected.
- Frame-by-Frame Study: Analysts break down movement patterns frame by frame.
- Movement Mapping: Key features like stride length, arm swing, posture, and foot placement are studied.
- Comparison: The suspected individual’s gait is compared with verified footage of the person in question.
- Expert Opinion: A forensic report is prepared based on similarities or differences observed.
Why Is It Being Considered in This Case?
In the Ketan Agarwal murder investigation, reports suggest that CCTV footage may have captured an individual believed to be Chetan Chaudhary near key locations connected to the incident. However, due to unclear visuals or limited facial visibility, investigators may rely on gait analysis to strengthen identification.
This technique is especially useful when:
- The face is partially hidden or blurred
- The suspect is captured from a distance
- Clothing or disguises make facial recognition unreliable
How Reliable Is Gait Analysis?
Gait analysis is considered a supporting forensic tool, not standalone proof. Courts and investigators generally use it along with other evidence such as:
- CCTV footage
- Call records
- Digital footprints
- Eyewitness statements
