Biosignal and Biomedical Image Processing phần 8 doc

... image (mri.tif) and code it in pseudocolor by coding the image into green and the inverse of the image into blue. Then take a threshold and plot pixels over 80 % maximum as red. 4. Load the image of a cancer cell ... shape) where I1 and h are image and filter coefficients (or two images, or simply two matrices) to be convolved and shape is an optional argument that cont...

Ngày tải lên: 23/07/2014, 19:20

... Generate bandlimited noise and compute and plot the auto- correlation function for two different bandwidths. % Example 2.2 and Figure 2 .8 % Generate colored noise having two different bandwidths % and ... construct and plot the ensemble standard deviation. 2. Use the MATLAB autocorrelation and random number routine to plot the autocorrelation sequence of white noise. Use arrays...

Ngày tải lên: 23/07/2014, 19:20

... Initialize parameters TLFeBOOK 2 18 Chapter 8 % Example 8. 1 and Figure 8. 3 Wiener Filter Theory % Use an adaptive filter to eliminate broadband noise from a % narrowband signal % Implemented using ... Example 8. 1, but uses the LMS algorithm in the routine lms instead of the Wiener-Hopf equation. % Example 8. 3 and Figure 8. 8 Adaptive Filters % Use an adaptive filter to elimina...

Ngày tải lên: 05/08/2014, 09:45

... viewing TLFeBOOK 10 Fundamentals of Image Processing: MATLAB Image Processing Toolbox IMAGE PROCESSING BASICS: MATLAB IMAGE FORMATS Images can be treated as two-dimensional data, and many of the signal process- ing ... given data format and/ or class. For example, standard MATLAB oper- ations require the data be in double format, and will not work correctly with Indexed ima...

Ngày tải lên: 05/08/2014, 09:45

... upper images were created by thresholding the intensity. The lower left image is a com- bination (logical OR) of the upper images and the lower right image adds a thresholded texture-based image. The ... intensity thresh- olded images are shown in Figure 12.15 (upper images; the upper right image has been inverted). These images are combined in the lower left image. The lower right...

Ngày tải lên: 23/07/2014, 19:20

... rotated image and the original image. ) 9. Load a frame of the MRI image ( mri.tif ) and perform a spatial transfor- mation that first expands the image horizontally by 20% then rotates the image by ... 0.0113 0. 083 8 0.6193 0. 083 8 0.0113 0. 083 8 0.0113 ͬ The Laplacian filter is used to take the second derivative of an image: ∂ 2 /∂x. The log filter is actually the log of G...

Ngày tải lên: 23/07/2014, 19:20

... sequen- tially as in Example 8. 3. Use a FIR filter lengths of 1 28 and 256 points. Evaluate the influence of modifying the delay between 4 and 18 samples. 5. Modify the code in Example 8. 5 so that the reference ... ALE filter. % Example 8. 4 and Figure 8. 9 Adaptive Line Enhancement (ALE) % Uses adaptive filter to eliminate broadband noise from a % narrowband signal % % Generate...

Ngày tải lên: 23/07/2014, 19:20

... − n) (31) TLFeBOOK TLFeBOOK 2 18 Chapter 8 % Example 8. 1 and Figure 8. 3 Wiener Filter Theory % Use an adaptive filter to eliminate broadband noise from a % narrowband signal % Implemented using ... adjusted to approxim ate a bandpass filter with a small bandwidth and a p eak a t 10 H z. TLFeBOOK 8 Advanced Signal Processing Techniques: Optimal and Adaptive Filters OPTIMAL SIG...

Ngày tải lên: 23/07/2014, 19:20

... time and TLFeBOOK 150 Chapter 6 r xx (τ) = ∫ ∞ −∞ x(t) x(t +τ) dt (4) and r xx (n) = ∑ M k=1 x(k) x(k + n)(5) where τ and n are the shift of the waveform with respect to itself. In the standard ... signal and an imaginary part that is the Hilbert Transform of the real signal (Cohen, 1 989 ). This is the approach used by the MATLAB routine hilbert and the routine hilber on the disk,...

Ngày tải lên: 23/07/2014, 19:20

... Example 4.5 and Figure 4.13 % Bandstop filter with a passband gain of 1 between 0 and 100, % a stopband gain of -40 db between 300 and 400 Hz, % and an upper passband gain of 1 between 500 and fs/2 ... Design a bandstop filter having the following characteris- tics: a passband gain of 1 (0 db) between 0 and 100, a stopband gain of −40 db between 300 and 400 Hz, and an upper pa...

Ngày tải lên: 23/07/2014, 19:20