Lawrence A Wolff

US Patent:

RE37752, Jun 18, 2002

Filed:

Jan 22, 1998

Appl. No.:

09/010838

Inventors:

Lawrence B. Wolff - Baltimore MD

Assignee:

Equinox Corporation - New York NY

International Classification:

H04N 5225

US Classification:

348207, 348335

Abstract:

A polarization viewer comprising a mechanism for forming a broadview image having a spectral width greater than 2 angstroms and 0. 50Â based on polarization information of a scene. The polarization viewer is also comprised of a mechanism for providing polarization information to the forming mechanism. The providing mechanism is in communication with the forming mechanism. In a first embodiment, the providing mechanism includes a camera mechanism in communication with the forming mechanism. The camera mechanism includes a fixed polarizer analyzer disposed such that electromagnetic radiation entering the camera mechanism passes through the polarizer analyzer. The providing mechanism can also include a mechanism for steering a polarization plane of the radiation. The steering mechanism is disposed such that radiation passing through the polarizer analyzer first passes through the steering mechanism. The steering mechanism preferably includes a first twist crystal and at least a second twist crystal aligned with the first twist crystal such that radiation passing through the first crystal then passes through the second crystal.

US Patent:

6539126, Mar 25, 2003

Filed:

Apr 16, 1999

Appl. No.:

09/292740

Inventors:

Diego A. Socolinsky - Baltimore MD
Lawrence B. Wolff - New York NY

Assignee:

Equinox Corporation - New York NY

International Classification:

G06T 500

US Classification:

382274, 345617, 382154

Abstract:

A method is presented for the treatment and visualization of local contrast in n-dimensional multispectral images, which directly applies to n-dimensional multisensor images as well. A 2Ã2 matrix called the contrast form is defined comprised of the first derivatives of the n-dimenional image function with respect to the image plane, and a local metric defined on n-dimensional photometric space. The largest eigenvector of this 2Ã2 contrast form encodes the inherent local contrast at each point on the image plane. It is shown how a scalar intensity function defined on n-dimensional photometric space is used to select a preferred orientation for this eigenvector at each image point in the n-dimensional image defining the contrast vector field for an n-dimensional image. A grey level visualization of local n-dimensional image contrast is produced by the greylevel image intensity function such that the sum of the square difference between the components of the gradient vector of this intensity function and the components of the contrast vector field is minimized across the image plane. This is achieved by solving the corresponding Euler-Lagrange equations for this variational problem.

US Patent:

8587659, Nov 19, 2013

Filed:

May 7, 2008

Appl. No.:

12/116843

Inventors:

Diego A. Socolinsky - Baltimore MD, US
Joshua Neuheisel - Baltimore MD, US
Lawrence B. Wolff - New York NY, US

Assignee:

Equinox Corporation - New York NY

International Classification:

H04N 7/18

US Classification:

348158, 318 47, 318 68, 318208, 318222, 318333

Abstract:

A methodology and apparatus is described that registers images outputted by at least two video camera sensors that are not necessarily bore-sighted nor co-located together. Preferably this can be performed in real-time at least at video rate. The two video camera sensors can be either of similar or two different modalities (e. g. , one can be intensified visible, while the other can be thermal infrared) each possibly with a different field-of-view. The methodology and apparatus take advantage of a combination of Inertial Measurement Units (IMUs) information and image registration between the two camera sensors from computational image processing. In one preferred embodiment, the system uses a rifle mounted weapon sight camera sensor and a helmet mounted sensor camera. The aim point of the weapon sight camera sensor (e. g. , typically at the image center) zeroed to the true rifle aim point is digitally overlayed as a reticle on the video image from the helmet sensor, displayed on a head mounted display (HMD).

US Patent:

57267553, Mar 10, 1998

Filed:

Aug 9, 1996

Appl. No.:

8/696022

Inventors:

Lawrence B. Wolff - Baltimore MD

International Classification:

G01J 400
H04W 718
H04W 947

US Classification:

356364

Abstract:

An apparatus comprising an optical filter which resolves electromagnetic radiation into a sequence of resolved polarization components. The apparatus is also comprised of an imaging device having a storage device. The imaging device is disposed adjacent to the optical filter to receive the sequence of resolved polarization components from the optical filter and store them in the storage device for subsequent processing. The present invention pertains to an apparatus for viewing. The apparatus comprises a frame. The apparatus also is comprised of a first optical filter mounted on the frame to cover one eye of a viewer when the viewer wears the frame. The first optical filter resolves electromagnetic radiation into a sequence of resolved polarization components so the viewer can view the sequence of resolved polarization components. The present invention also pertains to an apparatus for viewing. The apparatus is comprised of a housing.

US Patent:

55573240, Sep 17, 1996

Filed:

Oct 29, 1992

Appl. No.:

7/968175

Inventors:

Lawrence B. Wolff - Baltimore MD

Assignee:

The Johns Hopkins University - Baltimore MD

International Classification:

H04N 5225

US Classification:

345207

Abstract:

A polarization viewer comprising a mechanism for forming a broadview image having a spectral width greater than 2 angstroms and 0. 50. degree. based on polarization information of a scene. The polarization viewer is also comprised of a mechanism for providing polarization information to the forming mechanism. The providing mechanism is in communication with the forming mechanism. In a first embodiment, the providing mechanism includes a camera mechanism in communication with the forming mechanism. The camera mechanism includes a fixed polarizer analyzer disposed such that electromagnetic radiation entering the camera mechanism passes through the polarizer analyzer. The providing mechanism can also include a mechanism for steering a polarization plane of the radiation. The steering mechanism is disposed such that radiation passing through the polarizer analyzer first passes through the steering mechanism. The steering mechanism preferably includes a first twist crystal and at least a second twist crystal aligned with the first twist crystal such that radiation passing through the first crystal then passes through the second crystal.