Objet segmentation is a critical task in vision par ordinateur that involves identifying and separating different objects within an image or video frame. This technique enables machines to understand the content of images in a more detailed manner by not only detecting objects but also providing precise outlines or masks for each object present.
Il existe deux principaux types de segmentation d'objets : segmentation d'instance and segmentation sémantique. Instance segmentation not only classifies each pixel in an image but also differentiates between different instances of the same object class (e.g., distinguishing between multiple cars). In contrast, semantic segmentation assigns a label to each pixel in the image based on the object class (e.g., labeling all pixels belonging to cars as ‘car’ without distinguishing between individual vehicles).
Object segmentation relies heavily on advanced AI techniques, particularly deep learning and réseaux de neurones convolutifs (CNNs). These models are trained on large datasets containing annotated images, allowing them to learn how to recognize and segment various objects effectively. Popular frameworks and architectures for this task include Mask R-CNN, U-Net, and DeepLab.
This technology has numerous applications, including autonomous driving, medical imaging, video surveillance, and réalité augmentée. By accurately segmenting objects, systems can make better decisions, perform more precise manipulations, and enhance user interactions.