Method and system for detection of a desired object occluded by packaging

US12164017B2 · kind B2 · utility

Assignee

• Tata Consultancy Services Limited · IN

Inventors

• Arindam Ray · Sherghati, IN
• Taniya Das · Sherghati, IN
• Arijit Chowdhury · Sherghati, IN
• SOUMYA CHAKRAVARTY · Sherghati, IN
• Smriti Rani · Sherghati, IN
• Anwesha Khasnobish · Sherghati, IN
• Tapas Chakravarty · Sherghati, IN
• Arpan Pal · Sherghati, IN

Key dates

• Filing date: Nov 1, 2021
• Grant date: Dec 10, 2024
• Expiry date: Jan 24, 2043

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S13/89
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An e-commerce business model has witnessed several cases where packages with faulty goods, returned by buyers, without procured object, rather replaced by different device. This disclosure relates a method to detect whether object under test a desired object. A plurality of back-scattered signals is received from the object under test occluded by packaging with continuous motion on conveyer based on first antenna-radar combination. The plurality of back-scattered signals is processed by applying four-tap difference filter to obtain motion-filtered data matrix. A low pass filter is applied on the motion-filtered data matrix to obtain enveloped motion-filtered data matrix. A sliding constant false alarm rate is applied on the enveloped motion-filtered data matrix to determine detection threshold value. A check is performed to detect whether the object under test is the desired object based on whether intensity of the plurality back-scattered signals exceeds the detection threshold value.