FLIR system with two optical channels for observing a wide and a narrow field of view
First Claim
Patent Images
1. A method for observing a scene, comprising the steps of:
- directing an image pick-up side of an infrared imaging system having two optical channels with different fields of view at a scene to be observed to obtain a picture signal of the scene to be observed having a wide field of view and having a narrow field of view;
converting said picture signals of said two optical channels into two television video signals through two converter devices;
synchronizing said two television video signals to one another with a first synchronization device;
supplying said two television video signals to a picture mixing device;
selecting only a detail of said television video signal of said narrow field of view by a detail selector;
mixing said detail with said television video signal of said wide field of view in said picture mixing device to form a mixed video signal; and
portraying said mixed video signal on a single image portrayal device in such fashion that an overview of the scene to be observed from the wide field of view channel appears simultaneously with a mixed-in picture detail of said narrow field of view channel in a portrayed picture.
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Abstract
A scene is recorded simultaneously by two optical channels having different fields of view and different magnifications, whereby a picture detail from the narrow field of view is mixed into the image of the overall scene and the mixed image is portrayed on a single image portrayal device. The picture detail can follow the relative motion of an object on the basis of a tracking event. Higher detail recognition is provided for one person operation at a higher range without loss of the overall portrayal.
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Citations
19 Claims
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1. A method for observing a scene, comprising the steps of:
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directing an image pick-up side of an infrared imaging system having two optical channels with different fields of view at a scene to be observed to obtain a picture signal of the scene to be observed having a wide field of view and having a narrow field of view; converting said picture signals of said two optical channels into two television video signals through two converter devices; synchronizing said two television video signals to one another with a first synchronization device; supplying said two television video signals to a picture mixing device; selecting only a detail of said television video signal of said narrow field of view by a detail selector; mixing said detail with said television video signal of said wide field of view in said picture mixing device to form a mixed video signal; and portraying said mixed video signal on a single image portrayal device in such fashion that an overview of the scene to be observed from the wide field of view channel appears simultaneously with a mixed-in picture detail of said narrow field of view channel in a portrayed picture.
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2. A method for observing a scene, comprising the steps of:
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directing an image pick-up side of an infrared imaging system having two optical channels with different fields of view at a scene to be observed to obtain a picture signal of the scene to be observed having a wide field of view and having a narrow field of view; converting said picture signals of said two optical channels into two television video signals through two converter devices; synchronizing said two television video signals to one another with a first synchronization device; supplying said two television video signals to a picture mixing device; selecting a part of said television video signal from said optical channel of said narrow field of view by a detail selector; mixing said part of said narrow field of view signal with said television video signal of said wide field of view in said picture mixing device to form a mixed video signal; portraying said mixed video signal on a single image portrayal device in such fashion that an overview of the scene to be observed from the wide field of view channel appears simultaneously with a mixed-in picture detail of said narrow field of view channel in a portrayed picture; supplying said mixed video signal to a symbol generator before said step of portraying; superimposing a symbol in a wide field of view portion of said mixed video signal to identify a position of a portrayed picture detail. - View Dependent Claims (3)
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4. A method for observing a scene, comprising the steps of:
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directing an image pick-up side of an infrared imaging system having two optical channels with different fields of view at a scene to be observed to obtain a picture signal of the scene to be observed having a wide field of view and having a narrow field of view; converting said picture signals of said two optical channels into two television video signals through two converter devices; synchronizing said two television video signals to one another with a first synchronization device; supplying said two television video signals to a picture mixing device; selecting a part of said television video signal from said optical channel of said narrow field of view by a detail selector; mixing said part of said narrow field of view signal with said television video signal of said wide field of view in said picture mixing device to form a mixed video signal; portraying said mixed video signal on a single image portrayal device in such fashion that an overview of the scene to be observed from the wide field of view channel appears simultaneously with a mixed-in picture detail of said narrow field of view channel in a portrayed picture; mixing a part of said video signal of said narrow field of view channel selected by said detail selector into said video signal of said wide field of view channel with a second synchronization device so that a picture detail of said narrow field of view channel is portrayed in a preselected region of said image portrayal device.
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5. A method for observing a scene, comprising the steps of:
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directing an image pick-up side of an infrared imaging system having two optical channels with different fields of view at a scene to be observed to obtain a picture signal of the scene to be observed having a wide field of view and having a narrow field of view; converting said picture signals of said two optical channels into two television video signals through two converter devices; synchronizing said two television video signals to one another with a first synchronization device; supplying said two television video signals to a picture mixing device; selecting a part of said television video signal from said optical channel of said narrow field of view by a detail selector; mixing said part of said narrow field of view signal with said television video signal of said wide field of view in said picture mixing device to form a mixed video signal; portraying said mixed video signal on a single image portrayal device in such fashion that an overview of the scene to be observed from the wide field of view channel appears simultaneously with a mixed-in picture detail of said narrow field of view channel in a portrayed picture; tracking a portrayed picture detail of said narrow field of view channel to follow relative motion of an object in said narrow field of view by a tracker. - View Dependent Claims (6, 7, 8)
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9. An apparatus for observing a scene, comprising:
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an image system having two optical channels with different fields of view, said two channels being a narrow field of view channel and a wide field of view channel; two converter means for converting picture signals of said two channels into two corresponding video signals being a narrow field of view video signal and a wide field of view video signal; a synchronization means for synchronization of said two video signals; a detail selector means for selecting a part of said narrow field of view signal; a picture mixing means connected to an output of said synchronization means and to said detail selector means for mixing said part of said narrow field of view signal into said wide field of view signal to form a mixed video signal; a single image portraYal device connected to receive said mixed video signal so that an overview scene of said wide field of view channel and a mixed up picture detail of the narrow field of view channel appear simultaneously in a portrayed picture. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification