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8 <TITLE>CTSim's Online Computed Tomography Simulator</TITLE>
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12 <a href="http://www.ctsim.org">CTSim's</a>
13 Online Computed Tomography Simulator</H1>
14 Reasonable defaults have been filled into this form. For detailed explanations of the
15 parameters on this form, please visit CTSim's online <a href="http://www.ctsim.org/manual/ctsim_contents.html">manual</a>.<br>
17 <FORM action="@cgibinurl@/ctsim.cgi" method="POST">
18 <table border=1 cellpadding="5" bgcolor="#FFFFFF">
20 <h3>Select Image and Size</h3>
23 <INPUT type="radio" name="Phantom_Name" value="herman" checked>G.T. Herman<br>
24 <INPUT type="radio" name="Phantom_Name" value="shepp-logan">Shepp-Logan<br>
25 <INPUT type="radio" name="Phantom_Name" value="unit-pulse">Unit Pulse<br>
28 Width: <input type="text" name="Phantom_Nx" size="4" value="128"><br>
29 Height: <input type="text" name="Phantom_Ny" size="4" value="128"><br>
31 View Ratio: <input type="text" name="Phantom_ViewRatio" size="4" value="1.01">
33 Number of Samples<br>per pixel: <input type="text" name="Phantom_NSample" size="2" value="2"><br>
36 Minimum: <input type="text" name="Disp_Min" size=5 value="auto"><br>
37 Maximum: <input type="text" name="Disp_Max" size=5 value="auto"><br>
39 <!--MPI Supercomputing:<br>
40 <INPUT type="radio" name="MPI" value="yes">Yes (Multiple CPUs)<br>
41 <INPUT type="radio" name="MPI" value="no" checked>No (Single CPU)<br>
46 <h3>Simulate X-Ray acquistion</h3>
49 <INPUT type="radio" name="PJ_Geometry" value="parallel" checked>Parallel<br>
50 <INPUT type="radio" name="PJ_Geometry" value="equiangular">Equiangular<br>
51 <INPUT type="radio" name="PJ_Geometry" value="equilinear">Equilinear<br>
53 Number of Detectors: <input type="text" name="PJ_NDet" size="4" value="200"><p>
54 Number of Rotations: <input type="text" name="PJ_NRot" size="4" value="200"><p>
55 Focal Length: <input type="text" name="PJ_FocalLength" size="4" value="2.0"><p>
56 Scan Ratio: <input type="text" name="PJ_ScanRatio" size="4" value="1.0"><p>
57 Number of Rays<br>(samples) per detector: <input type="text" name="PJ_NRay" size="2" value="2"><p>
58 Rotation Angle<br>as a fraction of a cricle: <input type="text" name="PJ_RotAngle" size="3" value="1.0"><br>
61 <H3>Image Reconstruction</H3>
64 <input type="radio" name="IR_FilterMethod" value="convolution" checked>Convolution<br>
65 <input type="radio" name="IR_FilterMethod" value="fourier">Fourier<br>
66 <input type="radio" name="IR_FilterMethod" value="fourier_table">Fourier Table<br>
67 <input type="radio" name="IR_FilterMethod" value="rfftw">FFT<br>
69 Zeropad (applies to<br> Fourier & FFT):
70 <input type="text" name="IR_Zeropad" size="1" value="1"><br>
73 <input type="radio" name="IR_Interp" value="nearest">Nearest Neighbor<br>
74 <input type="radio" name="IR_Interp" value="linear" checked>Linear<br>
75 <input type="radio" name="IR_Interp" value="cubic">Cubic<br>
78 <input type="radio" name="IR_Filter" value="abs_bandlimit" checked>Bandlimit<br>
79 <input type="radio" name="IR_Filter" value="abs_cos">Cosine<br>
80 <input type="radio" name="IR_Filter" value="abs_hamming">Hamming<br>
81 <input type="radio" name="IR_Filter" value="abs_hanning">Hanning<br>
82 <input type="radio" name="IR_Filter" value="abs_sinc">Sinc<br>
83 <input type="radio" name="IR_Filter" value="shepp">Shepp-Logan
85 Hamming alpha factor (0.0-1.0): <input type="text" name="IR_Filter_Param" size="3" value="1.0"><p>
86 Backprojection Method:<br>
87 <input type="radio" name="IR_Backproj" value="trig">Trig<br>
88 <input type="radio" name="IR_Backproj" value="table">Trig Table<br>
89 <input type="radio" name="IR_Backproj" value="diff">Difference<br>
90 <input type="radio" name="IR_Backproj" value="idiff" checked>Difference (integer math)<br>
95 <input type="submit" value="Simulate"><input type="reset" value="Set Fields to Default">
97 After clicking the <b>Simulate</b> button, it will take a few seconds to a few minutes for your results to appear depending
98 upon the simulation parameters that you have chosen.