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US6865028 - Method for capturing a panoramic image by means of an image sensor rectangular in shape

March 2005

Patent: United States Patent 6865028

Authors:

Christophe Moustier

Gfi Informatique

A method for capturing a digital panoramic image, includes projecting a panorama onto an image sensor by means of a fish-eye objective lens having a constant field angle relative to its optical axis. The image sensor is rectangular in shape. The fish-eye objective lens is provided to project onto the image sensor, without reducing the field of view, a distorted panoramic image that covers a number of pixels on the image sensor higher than the number of pixels that would be covered by an image disk.

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WO2002093908A3 - Method for capturing and displaying a variable-resolution digital panoramic image

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The invention relates to a method for capturing a digital panoramic image comprising a step whereby a panorama is projected onto an image sensor using a wide-angle lens. According to the invention, the wide-angle lens has an image point distribution function which is non-linear in relation to the field of view of the object points of the panorama, such that at least one area of the image obtained ... [Show full abstract] is expanded while at least one other area of said image is compressed. During the display of a panoramic image obtained in compliance with said method, a step is provided for involving the correction of the non-linearity of the initial image which is performed using a function which is reciprocal to the lens non-linear distribution function or using the non-linear distribution function. The invention is advantageous as the image is expanded and the definition in the most useful areas of said image is improved. The inventive method is particularly suitable for video surveillance, video teleconferencing and video conferencing and for digital panoramic photography.

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A method for orienting a digital panoramic image obtained using at least one initial wide-angle image the image points of which are transferred into a three-dimensional coordinate system includes inserting an orientation mark into the initial image at the time of the exposure. The method further includes detecting the location of the orientation mark in the digital panoramic image, performed by ... [Show full abstract] an image analysis algorithm.

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February 1987 · Agricultural and Forest Meteorology

Thomas J. Herbert

Fisheye photographic lenses project a hemispherical object region onto a circle on the image plane and thus often are used for measurement of plant leaf cover and shading of plant stands. In general, for these lenses, object regions of equal solid angle do not result in images of equal area. Instead, the area of a projected region varies significantly as a function of the angle between the ... [Show full abstract] optical axis of the lens and the center of the object region. This study demonstrates that very small amounts of radial lens distortion produce relatively large changes in projected areas on the image plane and describes the projection of image regions for several commonly available fisheye lenses.

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Happy Family - see https://fan-de-test.fandom.com/fr/wiki/Happy_Family_for_Software_Craftsmanship

November 2020

Christophe Moustier

Tool to raise through gamification the Software Craftsmanship within a developers team. This content can be used as a technical retrospective. < >