Emerging Trends in Engineering and Technology (Volume - 3), edited by Mohit Bajpai, Dr. A.V. Sudhakara Reddy, and Dr. Rajesh Reddy Duvvuru, presents seven interdisciplinary chapters spanning machine learning, image processing, digital signal processing, antenna design, and environmental engineering. Key highlights include CNN-based real-time object detection in video surveillance, DWT-based image watermarking, solar photo-Fenton degradation of dyes, CT-scan-based digital image analysis, modal and finite element analysis, RFID-based real-time identification, and UWB microstrip patch antenna design. The volume showcases innovative techniques like YOLO, Lucas-Kanade, and Shi-Tomasi algorithms, integrating MATLAB-based simulations and statistical optimization for practical application in surveillance, environmental cleanup, and biomedical imaging. This book is an essential resource for engineering students, researchers, and professionals in ECE, EEE, CSE, and allied fields, seeking real-world AI and embedded system solutions.