What is YOLO?
YOLO is an identification algorithm that uses neural networks. Because of its speed and precision, this algorithm is quite popular. It has been used to identify traffic signals, pedestrians, parking meters, and animals in a variety of applications.
Convolutional neural networks (CNN) are used in the YOLO method to recognize objects in real-time. To identify objects, the approach just takes a single forward propagation through a neural network, as the name indicates.
It indicates that a single algorithm run is used to forecast the whole picture. The CNN is used to forecast multiple bounding boxes and class probabilities at the same time.
There are several variations of the YOLO algorithm. YOLO and YOLOv3 are two popular examples.
Object detection
Object detection is a computer vision phenomenon in which numerous items are detected in digital photos or movies. Those items can vary from objects like automobiles, houses, stones to animals or people.
Object identification is accomplished using a variety of methods (SSD or R-CNN). Even though these techniques have overcome the constraints of data limitation they are not capable of detecting objects in a single algorithm run.
- Because of its greater performance over the aforementioned object identification approaches, the YOLO algorithm has gained prominence.
Benefits of YOLO
- Because it can predict objects in real-time, this approach enhances detection speed.
- High precision: YOLO is a prediction approach that yields precise findings with low background noise.
- Learning skills: The algorithm has exceptional learning abilities, allowing it to learn object representations and detection.
How to use YOLO?
Bounding box – A bounding box is an outline that draws attention to a certain item in a picture. The following properties are present in every bounding box in the image: center, height, weight, and class. To forecast the center, height, weight, and class of objects, YOLO uses a single bounding box regression.
Residual blocks – The picture is first separated into many grids. The dimensions of each grid are S x S. There are a lot of grid cells of the same size. Objects that occur within grid cells will be detected by each grid cell. If an item center emerges within a certain grid cell, for example, that cell will be responsible for detecting it.
IOU – is an object detecting phenomenon that describes how boxes overlap. IOU is used by YOLO to create an output box that properly surrounds the items.
The bounding boxes and their confidence ratings are predicted by each grid cell. If the anticipated and real bounding boxes are identical, the IOU is 1. This approach removes bounding boxes that aren’t the same size as the actual box.
These three techniques are used together to create the final results.
The picture is first subdivided into grid cells. B bounding boxes are forecasted in each grid cell, along with their confidence scores. To determine the class of each item, the cells estimate the class probability.
The predicted bounding boxes are equivalent to the true boxes of the objects when intersection over union is used. These phenomena get rid of any extra bounding boxes that don’t fit the objects’ properties. The final detection will be made up of distinct bounding boxes that exactly suit the objects.
Where can you use YOLO?
In the following domains, the YOLO method can be used:
Security: YOLO may be used in security systems to ensure that an area is secure. Assume that individuals are not allowed to travel through a specific location for security reasons. If someone enters the restricted area, the YOLO algorithm will detect them, prompting security staff to take additional action.
AI driving: The YOLO algorithm can be used in autonomous automobiles to identify items such as vehicles, pedestrians, and parking signals in their immediate vicinity. Because there is no human driver in charge of an autonomous vehicle, object detection is used to avoid collisions.
Wildlife: This algorithm is used to detect a variety of woodland creatures. Wildlife rangers and journalists utilize this form of detection to identify animals in films (both recorded and real-time) and photos. Giraffes, elephants, and bears are among the species that may be seen.
