Perform histogram equalization for the following histogram.
| Gray level | 0 | 1/7 | 2/7 | 3/7 | 4/7 | 5/7 | 6/7 | 7/7 |
| Number of occurrences | 400 | 700 | 800 | 900 | 500 | 400 | 196 | 200 |
The given histogram has eight discrete gray levels from 0 to 7/7 with corresponding numbers of occurrences. The total number of pixels is obtained by summing all occurrences, which gives 4096 pixels. The probability of occurrence for each gray level is found by dividing the number of occurrences at that level by 4096. Thus, __________ ________ ____ ______ ____ ________ ________ _______ _________.
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Explain the functioning of an adaptive, local noise reduction filter.
Show that Sobel masks can be implemented by one pass of differencing mask of the form [−1 0 1](or its vertical counterpart) followed by a smoothing mask of the form [1 2 1] (or its vertical counterpart).
A bullet is 2.5 cm long, 1cm wide and its range of speed is . The bullet is flight is captured by a camera that exposes the scene for k sec and the bullet occupies 10% of the horizontal resolution of
frames. Find
i) Automatic segmentation of the bullet.
ii) Automatic determination of speed of the bullet.
Explain the Hough transform for edge linking with suitable example.
In image restoration, how are the noise parameters estimated?
b) Assume that the noise is estimated as exponential, with mean Variance
. How will you estimate the parameter 'a' of pdf of exponential Noise?
) Propose a gray level slicing algorithm capable of producing the 4-bit plane of an 8-bit monochrome image.
Apply the perception algorithm to the following pattern classes:,
.
Let and
Also, Sketch the decision surface.