A Semi-Automated Statistical Algorithm for Object Separation

作者：Srivastava Madhur; Singh Satish K^*; Panigrahi Prasanta K

来源：Circuits, Systems, and Signal Processing, 2013, 32(6): 3059-3078.

DOI：10.1007/s00034-013-9613-4

• Gaussian distribution
• Thresholding
• Impulse function
• Segmentation
• Object separation

We explicate a semi-automated statistical algorithm for object identification and segregation in both gray scale and color images. The algorithm makes optimal use of the observation that definite objects in an image are typically represented by pixel values having narrow Gaussian distributions about characteristic mean values. Furthermore, for visually distinct objects, the corresponding Gaussian distributions have negligible overlap with each other, and hence the Mahalanobis distance between these distributions is large. These statistical facts enable one to subdivide images into multiple thresholds of variable sizes, each segregating similar objects. The procedure incorporates the sensitivity of the human eye to the gray pixel values into the variable threshold size, while mapping the Gaussian distributions into localized delta-functions, for object separation. The effectiveness of this recursive statistical algorithm is demonstrated using a wide variety of images.

• 出版日期2013-12