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The V1 Saliency Hypothesis, or V1SH (pronounced ‘vish’) is a theory [1] [2] about V1, the primary visual cortex (V1). It proposes that the V1 in primates creates a saliency map of the visual field to guide visual attention or gaze shifts exogenously.
V-speed designator Description V 1: The speed beyond which takeoff should no longer be aborted (see § V 1 definitions below). [7] [8] [9]V 2: Takeoff safety speed. The speed at which the aircraft may safely climb with one engine inoperative.
If the images to be rectified are taken from camera pairs without geometric distortion, this calculation can easily be made with a linear transformation.X & Y rotation puts the images on the same plane, scaling makes the image frames be the same size and Z rotation & skew adjustments make the image pixel rows directly line up [citation needed].
Let k be a unit vector defining a rotation axis, and let v be any vector to rotate about k by angle θ (right hand rule, anticlockwise in the figure), producing the rotated vector . Using the dot and cross products, the vector v can be decomposed into components parallel and perpendicular to the axis k,
An equirectangular projection simply maps the yaw and pitch (longitude and latitude) of a sphere linearly to a rectangular image. It produces a signature curved look. In addition, the distribution of pixel density (which can be visualized with Tissot's indicatrix) is suboptimal, with the usually more important "equator" getting the lowest density.
Visual area V2, or secondary visual cortex, also called prestriate cortex, [31] receives strong feedforward connections from V1 (direct and via the pulvinar) and sends robust connections to V3, V4, and V5. Additionally, it plays a crucial role in the integration and processing of visual information.
Then rotate the given axis and the point such that the axis is aligned with one of the two coordinate axes for that particular coordinate plane (x, y or z) Use one of the fundamental rotation matrices to rotate the point depending on the coordinate axis with which the rotation axis is aligned.
In this case, f is semiconjugate to the irrational rotation by θ, and the semiconjugating map h of degree 1 is constant on components of the complement of C. The rotation number is continuous when viewed as a map from the group of homeomorphisms (with C 0 topology) of the circle into the circle.