초록 ▼

A two-dimensional (2-D) machine-vision safety-solution involving a method and apparatus for performing high-integrity, high efficiency machine vision. The machine vision safety solution digitally filters a configurable number of time-sequenced images of a viewed area to create a filtered image. A te

A two-dimensional (2-D) machine-vision safety-solution involving a method and apparatus for performing high-integrity, high efficiency machine vision. The machine vision safety solution digitally filters a configurable number of time-sequenced images of a viewed area to create a filtered image. A textured background is used as a static target and viewed under ambient light, or alternatively a texture is observed under IR light. An artificial texture can be created with a particularized pattern. Each new image is then compared to the previously created model and a pixel-oriented difference image is calculated. The difference image is then processed for segmentation features attributable to an intruder object. For segmentation results that exceed a predetermined threshold, an alarm condition is set.

대표청구항 ▼

1. A method of detecting an intruding object in a space comprising the steps of:applying a textured background on said space; acquiring a digital source image of said space; generating a background image by processing said source image using a low pass filter; comparing said source image with said b

1. A method of detecting an intruding object in a space comprising the steps of:applying a textured background on said space; acquiring a digital source image of said space; generating a background image by processing said source image using a low pass filter; comparing said source image with said background image using a digital subtraction step to form a difference image; constructing a mask image by segmenting said difference image; combining said mask image with said background image to form a masked background image; performing an edge detection procedure on said masked background image to determine edge data; performing a gradient computation procedure on said source image to generate a gradient image; and performing a texture comparison procedure on said gradient image and said edge data.