Image Processing Reference

In-Depth Information

(1)

The equation is writen for a point in a video frame. The point is assumed to change its

pixel value over time. (
x
,
y
,
t
) is defined as the 3D point composed of the 2D coordinates (pixel

value) of the given point at time
t
.
I
represents the intensity function giving the image intens-

ity value of a given pixel value at a given time. The equation is based on the assumption that

enormously small amount of change in the pixel position of the point in enormously small

amount of time period converges to zero change in the intensity value. In other words, the

intensity value of a pixel in a frame is equal to the intensity value of another pixel having

the same point (the point in the former pixel) in the next frame. The point moves enormously

small amount of distance (pixel change) in enormously small amount of time.

(2)

(3)

resented by
I
x
,
I
y
,
I
t
are the derivatives of intensity function according to all dimensions.

(4)

Search WWH ::

Custom Search