integral image
[/ˈɪntɪɡrəl ˈɪmɪdʒ/]
nounpl: integral images
imagem integral
1. A computer vision technique that represents an image as a 2D array where each pixel value is the sum of all pixel values above and to the left of it, enabling fast computation of rectangular region sums
The integral image allows the algorithm to calculate the sum of pixels in any rectangular region in constant time.
A imagem integral permite que o algoritmo calcule a soma de pixels em qualquer região retangular em tempo constante.
2. A preprocessed representation of an image used in feature detection and image analysis algorithms, particularly in the Viola-Jones object detection framework
The Haar cascade classifier relies on integral images to efficiently detect faces in real-time.
O classificador de cascata Haar depende de imagens integrais para detectar rostos com eficiência em tempo real.
This term is primarily used in technical and academic contexts within computer science and engineering fields. It originated from Viola and Jones' seminal work on rapid object detection (2001) and has become a fundamental concept in computer vision. The term is consistent across both Brazilian Portuguese and European Portuguese technical communities, as it follows standard international terminology conventions used in scientific and technical literature.
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