  Object detection is a crucial task in computer vision that aims to identify
and localize objects in images or videos. The recent advancements in deep
learning and Convolutional Neural Networks (CNNs) have significantly improved
the performance of object detection techniques. This paper presents a
comprehensive study of object detection techniques in unconstrained
environments, including various challenges, datasets, and state-of-the-art
approaches. Additionally, we present a comparative analysis of the methods and
highlight their strengths and weaknesses. Finally, we provide some future
research directions to further improve object detection in unconstrained
environments.
