Given an image with uniform histogram. Explain the effect of applying following compression techniques:
i) Huffman,
ii) Golomb,
iii) LZW,
iv) Prediction coding, and
v) Optimal Quantization
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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).
Apply the perception algorithm to the following pattern classes:,
.
Let and
Also, Sketch the decision surface.
Explain in detail the adaptive mean and median filters.
b) Obtain mean and variance of the following noise pdfs:
i)
ii)
iii)
Describe the homographic filtering. Explain why the filtering scheme is effective for the applications it is used.
Given that
where f and g are real images and h is a spatial filter.
Obtain G(u,v), in terms of F(u,v), and H(u,v), the 2–D Fourier transform of g(x,y).
Filter the given gray level image with
i) mean filter using zero padding
ii) 3×3 weighted mean filter using zero padding with mask
iii) 3×3 median filter processing only such pixels that have all the needed neighbours.
iv) Laplacian filter with the given mask and reflecting the border pixels.
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.