Biosignal and Biomedical Image Processing MATLAB-Based Applications Muya phần 5 pptx

... image I(22 :54 ,22 :52 ) = . 25; % Four squares of different shades I(76;106,22 :52 ) = .5; % against a black background I(22 :52 ,76:106) = . 75; I(76:106,76:106) = 1; % % Construct projections: Fan and ... 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 ri...

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 ... the image and immovie requires that all images have the same dimensions.) Load frame 18 of the MRI image ( mri.tif ). Make a movie where the brain stretches in and out hor...

Ngày tải lên: 23/07/2014, 19:20

... MRI 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 ... default minimum and maximum values for the three non-indexed classes were: [0, 256 ] for uint8; [0, 655 35] for uint16; and [0, 1] for double arrays. TLFeBOOK Filters, Transf...

Ngày tải lên: 23/07/2014, 19:20

... sawtooth(w *5, .5) ؉ .1*randn(1,N); % and a periodic % function s3 = pulstran((0:999),(0 :5) ’*180,kaiser(100,3)) ؉ .07*randn(1,N); % % Plot original signals displaced for viewing TLFeBOOK 256 Chapter ... (10 and 20 Hz). The delay of 5 samples and the convergence gain of 0.0 75 were determined by trial and error to give the best results with the specified FIR filter length. TLFeBO...

Ngày tải lên: 23/07/2014, 19:20

... analysis applications only the subband signals are of interest and reconstruction is not needed, but in many wavelet applications, some operation is performed on the subband signals, y lp (n) and y hp (n), ... figure(’Units’,’inches’,’Position’,[0 2 .5 3 3 .5] ); fig2 = figure(’Units’, ’inches’,’Position’,[3 2 .5 5 5] ); fs = 1000; % Sample frequency TLFeBOOK Advanced Signal Proces...

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 ... preceded and followed by 0 .5 sec of no signal (i.e., zeros). Determine the magnitude of the STFT and plot as both a three-dimensional grid plot and as a contour plot. Do not use th...

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 50 0 and fs/2 ... used. Example 4 .5 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 4...

Ngày tải lên: 23/07/2014, 19:20

... commands and spectral analysis commands in a loop and calculate the spectrum five times plotting the five spectra superimposed. Repeat using the Welch method and data segment length of 128 and ... the Hamming widow to the data before calculating the FFT. 5. Repeat problem 4 above using the Welch method with 256 and 65 segment lengths and the window of your choice. 6. Repeat Prob...

Ngày tải lên: 23/07/2014, 19:20

... box and record the following output: Frequency (Hz): 2 10 20 60 100 1 25 150 200 300 400 V out volts rms: . 15 10 −7 0.1×10 −3 0.002 0.2 1 .5 3.28 4.47 4.97 4.99 5. 0 What is the cutoff frequency and ... 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 diff...

Ngày tải lên: 23/07/2014, 19:20

... Evaluation 254 Independent Component Analysis 259 MATLAB Implementation 2 65 Problems 270 10 Fundamentals of Image Processing: MATLAB Image Processing Toolbox 271 Image Processing Basics: MATLAB Image ... Coding Schemes 273 Data Formats 2 75 Data Conversions 2 75 Image Display 278 Image Storage and Retrieval 284 Basic Arithmetic Operations 2 85 Advanced Protocols: Blo...

Ngày tải lên: 23/07/2014, 19:20