초록 ▼

A device having an image-providing sensor, hereinafter designated as "image sensor," operating in the visible and near-infrared range, an thermal image-providing sensor, hereinafter designated as "thermal-image sensor," operating in the thermal radiation range and having a lower resolution than the

A device having an image-providing sensor, hereinafter designated as "image sensor," operating in the visible and near-infrared range, an thermal image-providing sensor, hereinafter designated as "thermal-image sensor," operating in the thermal radiation range and having a lower resolution than the image sensor, and an electronic evaluation system. The evaluation system determines whether one or both of the signals generated by the sensors are used for determining whether an alarm condition exists. As a result, the detectability of low-contrast objects is increased, the false alarm rate is reduced, and object classification is made possible.

대표청구항 ▼

[ What is claimed is:] [1.]1. A device for detecting the movement of an object, comprising,a first image sensor responsive to visible and near infrared radiation, and generating a first image signal representative of the object, said first image sensor being a pixel-wise addressable sensor;a second

[ What is claimed is:] [1.]1. A device for detecting the movement of an object, comprising,a first image sensor responsive to visible and near infrared radiation, and generating a first image signal representative of the object, said first image sensor being a pixel-wise addressable sensor;a second image sensor having a resolution lower than said first image sensor for detecting a second radiation type emitted by the object, and generating a second image signal representative of the object, said second image sensor being a low resolution thermal-image sensor; andan evaluation system responsive to the first and second image signals and determining whether one or both of the received image signals are to be evaluated for determining whether an alarm condition exists.