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Panoramic view algorithm for fisheye lens correction

A panorama view, fisheye lens technology, applied in the field of image processing, can solve problems such as few applications, complex model calculation, etc., to achieve the effect of improving time and accuracy

Inactive Publication Date: 2015-06-03
陆婷
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AI Technical Summary

Problems solved by technology

More exciting results can be obtained when restoring the depth of the scene, but the calculation with this model is too complicated
rarely used in practice

Method used

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  • Panoramic view algorithm for fisheye lens correction
  • Panoramic view algorithm for fisheye lens correction
  • Panoramic view algorithm for fisheye lens correction

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Embodiment Construction

[0013] Formation of fisheye image

[0014] The fisheye lens can be approximated to a hemispherical surface. The camera direction OZ axis of the fisheye camera is the optical axis, and XOY is the imaging direction, such as figure 1 shown. For a point in the space scene ,even Hand over the sphere to , over time Make a line parallel to the Z axis, and intersect the ground at a point , then click space point Pixels of the resulting fisheye image. Therefore, for a fisheye image, the captured image is a circular image. We all know that fisheye images have the characteristics of large viewing angle and rich information. The larger the angle of view of the fisheye lens, the greater its bending distortion, and only the straight line in the center of the lens can remain in its original state.

[0015] we use as figure 2 The steps of image correction are introduced in the form of a flow chart:

[0016] 1 Extract the effective range of fisheye

[0017] Fisheye ...

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Abstract

As video systems develop rapidly, a lot of video applications already appear, and subsequently, a large number of algorithm designs and image processing hardware devices emerge. One is the application of a wide-angle lens - fisheye lens. The fisheye lens has the advantages of short focal distance and wide visual angle, and is widely applied in fields such as virtual scenes, video monitoring, intelligent transportation and robot navigation. However, the fisheye lens has an inherent shortcoming, images shot by the fisheye lens are distorted severely, and if the projection information of the severely distorted images needs to be utilized, the distorted images have to be corrected into images according with the visual habit of people. The invention presents a rapid and accurate algorithm, i.e. a panoramic view algorithm for fisheye lens correction. The algorithm is integrated with the advantages of the latitude and longitude correction algorithm and the ball iteration algorithm, and thereby is improved in terms of time and precision.

Description

technical field [0001] The invention proposes a panoramic view algorithm based on fisheye lens correction, which belongs to the field of image processing. Background technique [0002] With the rapid development of the video system, a large number of video applications have appeared, and a large number of algorithm design and image processing hardware devices have emerged. One of them is the application of a wide-angle lens - fisheye lens. Fisheye lens has the advantages of short focal length and large viewing angle, and is widely used in virtual reality, video surveillance, intelligent transportation, robot navigation and other fields. However, the fisheye lens also has its own disadvantages. The images captured by this lens are severely distorted. If you want to use the projection information of these severely distorted images, you need to correct these distorted images into avatars that conform to people's visual habits. For the correction of fisheye images, although t...

Claims

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Application Information

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IPC IPC(8): G06T7/00
Inventor 陆婷
Owner 陆婷
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