Video imaging system with interactive windowing capability

• US 5,200,818 A
• Filed: 03/22/1991
• Issued: 04/06/1993
• Est. Priority Date: 03/22/1991
• Status: Expired due to Fees

• Current Assignee: Inbal Neta, Michal Neta, Yves Villaret
• Original Assignee: Inbal Neta, Michal Neta, Yves Villaret
• Inventors: Neta, Michal, Neta, Inbal, Villaret, Yves
• Primary Examiner(s): Groody, James J.
• Assistant Examiner(s): Powell, Mark R.
• Application Number:
  US07/673,328
• Time in Patent Office: 746 Days
• Field of Search: 358/180, 358/181, 358/108, 358/109, 358/87, 358/160
• US Class Current: 348/39
• CPC Class Codes: G02B 3/00 Simple or compound lenses
• CPC Class Codes: G03B 37/04 with cameras or projectors providing touching or overlapping fields of view
• CPC Class Codes: G06T 1/0007 Image acquisition
• CPC Class Codes: G08B 13/19626 optical details, e.g. lenses, mirrors or multiple lenses
• CPC Class Codes: G08B 13/19641 Multiple cameras having overlapping views on a single scene
• CPC Class Codes: G08B 13/19691 Signalling events for better perception by user, e.g. indicating alarms by making display brighter, adding text, creating a sound
• CPC Class Codes: H04N 23/54 Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
• CPC Class Codes: H04N 5/2628 Alteration of picture size, shape, position or orientation, e.g. zooming, rotation, rolling, perspective, translation

Abstract

This invention relates to a method and apparatus for a system having a multisensor optical module with a large aperture angle, 180 degrees or more possible (360 degrees around), and an electronic interface which outputs two video or digital images of the scene. The first image is a high resolution representation of the entire field of view reconstructed from the partial views of each sensor. The second image is a high resolution representation of a selected part of the scene (window), the dimension and position of which can be interactively commanded through a communication port. The size and location of the window may be changed at every frame (typically every 1/30th of a second). The window field of view can cover the field of view of several adjacent sensors while the resulting image will remain continuous and undistorted. An arbitrary number of windows can be obtained with a unique optical sensor by adding electronic modules to the interface apparatus. The system is applicable, for example, in professional video and television, in industrial machine vision, in image processing, in surveillance systems, in teleguided and tele-operated systems and in many other fields.

Claims

1. In a system for providing high resolution images of a scene, apparatus for simultaneously obtaining a wide angle image of the scene and a window image of a selected particular region of the scene, comprising:

an optical module having a plurality of light sensitive arrays disposed therearound, each light sensitive array comprising a sensor element and a lens element for providing electrical output signals representative of the scene;

means for connecting the output of each light sensitive array to an electronic interface, said electronic interface comprising means for processing the signals from said light sensitive arrays;

monitor view display means;

window view display means; and

means for connecting the output signal from said electronic interface to said monitor view display and said window view display to provide on the monitor view display a high resolution image of the entire scene obtained by the combination of a plurality of images acquired simultaneously on a plurality of sensor elements and on the window view display a high resolution image of a selected particular region of the scene obtained by the integration of data received from the sensor elements.

2. In a system for providing high resolution images of a scene as set forth in claim 1 wherein said optical module comprises a hemispheric-like surface having light sensitive arrays disposed around said surface.

3. In a system for providing high resolution images of a scene as set forth in claim 1 wherein said optical module comprises a polygonal shaped number having light sensitive arrays disposed around the periphery of said member.

4. In a system for providing high resolution images of a scene as set forth in claim 1 wherein said electronic interface comprises means to sample all sensor elements in the optical module, means to collect all pixel data of a determined field of view on said sensor elements, and means to provide to the monitor view display signals corresponding to an image of the entire scene, and to provide to the window view display signals corresponding to an image of a selected particular region of the entire scene such that both images can be viewed simultaneously.

5. In a system for providing for high resolution images of a scene as set forth in claim 4 wherein said electronic interface further comprises means to change the size and position of the window image on the window view display means.

6. In a system for providing high resolution images of a scene, a method for simultaneously obtaining a wide angle image of the scene and a window image of a selected particular region of the scene, comprising the steps of:

obtaining from an optical module having a plurality of light sensitive arrays disposed therearound, electrical output signals representative of the scene;

connecting the signals from each light sensitive array to an electronic interface;

processing the signals at the interface to provide two sets of output signals respectively representing the entire scene and a selected window region of the entire scene; and

connecting the output signals from said electronic interface to a monitor view display and a window view display to provide on the monitor view display a high resolution image of the entire scene obtained by the combination of a plurality of images acquired simultaneously on a plurality of light sensitive arrays and on the window view display a high resolution image of a selected particular region of the scene obtained by the integration of data received from the light sensitive arrays.

7. In a system for providing high resolution images of a scene as set forth in claim 6 further comprising the steps of sampling sensor elements in the optical module, collecting all pixel data of a determined field of view on said sensor elements, providing to the monitor view display signals corresponding to an image of the entire scene, and providing to the window view display signals corresponding to an image of a selected particular region of the entire scene such that both images can be viewed simultaneously.

8. In a system for providing for high resolution images of a scene as set forth in claim 7 further comprising the step of changing the size and position of the window image on the window view display means.

9. In a system for providing high resolution images of a scene scanned by a plurality of sensors, apparatus for simultaneously providing a monitor image of the scene and a window image of a selected particular region of the scene comprising:

means for receiving input signals from an arbitrary number N of sensors, each sensor scanning a portion of an image of a scene, said N sensors covering the entire scene with possible overlapping,

means for receiving a set of numerical input signals through an electronic interface, said numerical input signals representing the position, form and size of an arbitrary number of arbitrary window portions of the image of the scene, and

means for providing output signals, after each set of N input signals has been received from the N sensors, representing the following data;

(a) a monitor address number representing the position of one pixel in a monitor image frame intended to represent the entire scene,

(b) window address numbers, equal to or greater than the number of windows, each window address number representing the position of one pixel in a window image frame intended to represent one portion of the scene defined by one set of said numerical input signals,

(c) a monitor selection number defining the sensor from which data will be taken, representing the light intensity of the point in the image of the entire scene at the position given by said monitor address number, and

(d) window selection numbers, equal to or greater than the number of windows, defining the sensor from which data will be taken, representing the light intensities of the points in each window portion of the image of the scene at the position given by said address number.

10. In a system in accordance with claim 9 further comprising frame buffer means for collecting said output signals from the system and for displaying at an external display device the received data and forming an electronic image of the monitor view and the window view.

11. In a system in accordance with claim 10 further comprising means for connecting the N sensors, means for connecting to an external electronic device capable of providing numerical output signals defining the size, form and position of a portion of the window image of the scene, means for switching and connecting the sensors selected by said monitor and window selection number output signals to said frame buffer means and means for connecting external display devices capable of providing monitor and window images of the entire scene and of the selected portions of the scene.