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<!doctype HTML PUBLIC "-//IETF//DTD HTML//EN">
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<head>
<meta http-equiv="Content-Language" content="en-us">
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<title>Samples</title>
<link rel="stylesheet" type="text/css" href="../style.css">
</head>
<body>
<h2>Complete Samples</h2>
<p> You can also browse the <a href="../examples/">examples folder</a>. </p>
<h3><code>im_info</code></h3>
<p>This is a command line application that displays information obtained from a file using the IM I/O functions,
basically <b>imFile</b> functions. It depends only on the IM main library.</p>
<p>Here is an output sample:</p>
<pre>IM Info
File Name:
exif_test.tif
File Size: 9.00 Mb
Format: TIFF - Tagged Image File Format
Compression: NONE
Image Count: 1
Image #0
Width: 2048
Height: 1536
Color Space: RGB
Has Alpha: No
Is Packed: Yes
Is Top Down: Yes
Data Type: byte
Data Size: 9.00 Mb
Attributes:
YResolution: 72.00
XResolution: 72.00
DateTime: 2004:01:14 11:30:11
Make: SONY
ResolutionUnit: DPI
Model: CD MAVICA
Photometric: 2</pre>
<p>You can view the source code here: <a href="../examples/im_info.cpp">im_info.cpp</a></p>
<h3><code>im_copy</code></h3>
<p>This is a command line application that copies all the information from one file to another using the IM I/O
functions. It depends only on the IM main library. It is usefull for testing the drivers.</p>
<p>You can view the source code here: <a href="../examples/im_copy.cpp">im_copy.cpp</a></p>
<h3><code>proc_fourier</code></h3>
<p>This is another command line application that process an image in the Fourier Frequency Domain. In this domain the
image is a map of the spatial frequencies of the original image. It depends on the IM main library and on the IM_FFTW
library. The FFTW is a very fast Fourier transform, but is contaminated by the GPL license, so everything must be also
GPL. To use it in a commercial application you must contact the MIT and pay for a commercial license.</p>
<p>Se also <a href="doxygen/group__transform.html)">Reference / Image Processing / Domain
Transform Operations</a>.</p>
<p>You can view the source code here: <a href="../examples/proc_fourier.cpp">proc_fourier.cpp</a></p>
<h3><code>im_view</code></h3>
<p>This application uses IUP and CD to create a window with a canvas and draw the image into that canvas. It is a very
simple application, no zoom nor scrollbar management. The image is obtained from a file using the IM I/O functions,
but using the <b>imImage</b> structure to make the implementation easier.</p>
<p>For more IUP <a target="_blank" href="http://www.tecgraf.puc-rio.br/iup">http://www.tecgraf.puc-rio.br/iup</a> and
more CD <a target="_blank" href="http://www.tecgraf.puc-rio.br/cd">http://www.tecgraf.puc-rio.br/cd</a></p>
<p>You can view the source code here <a href="../examples/im_view.c">im_view.c</a>, or download it with some makefiles
<a href="../download/im_view.zip">im_view.zip</a>.</p>
<h3><code>glut_capture</code></h3>
<p>This application uses GLUT and OpenGL to create a window with a canvas and draw the image into that canvas. But the
image is obtained from a capture device. The image can be processed before display and a sequence of captured images
can be saved in an AVI file during capture.</p>
<p>You can view the source code here: <a href="../examples/glut_capture.c">glut_capture.c</a></p>
<h3><code>iupglcap</code></h3>
<p>This application uses IUP and OpenGL to create a window with two canvases
and draw a video capture image into one canvas. A processed image can be
displayed in the second canvas. It can also process frames from a video
file. It is very useful for Computer Vision courses. You can download the
source code here: <a href="../../../iup/html/download/iupglcap.zip">iupglcap.zip</a>. You will
also need to download IUP, CD and IM libraries for the
compiler you use.</p>
<h3><code>IMLAB</code></h3>
<p>If you want to see a more complex application with all the IM features explored the IMLAB is a complete example. It
displays each image in an individual image with zoom and pan capabilities. All the IM processing operations are
available together with some extra operations.</p>
<p>For more IMLAB go to <a href="http://www.tecgraf.puc-rio.br/~scuri/imlab">
http://www.tecgraf.puc-rio.br/~scuri/imlab</a>.</p>
<h3>Lua Samples</h3>
<p>To retreive information from an image file:</p>
<pre>require"imlua"
local ifile, error = im.FileOpen(file_name)
local format, compression, image_count = ifile:GetInfo()
local format_desc = im.FormatInfo(format)
for i = 1, image_count do
local width, height, color_mode, data_type, error = ifile:ReadImageInfo(i)
end
ifile:Close() </pre>
<p>To edit pixels in an image and save the changes:</p>
<pre>require"imlua"
local image = im.FileImageLoad(filename)
local r = image[0]
local g = image[1]
local b = image[2]
for row = 0, image:Height() - 1, 10 do
for column = 0, image:Width() - 1, 10 do
r[row][column] = 0
g[row][column] = 0
b[row][column] = 0
end
end
image:Save("edit.bmp", "BMP")</pre>
<p>To render noise:</p>
<pre>require"imlua"
require"imlua_process"
local image = im.ImageCreate(500, 500, im.RGB, im.BYTE)
im.ProcessRenderRandomNoise(image)
image:Save("noise.tif", "TIFF") </pre>
<p>To render using the CD library:</p>
<pre>require"imlua"
require"cdlua"
require"cdluaim"
local image = im.ImageCreate(500, 500, im.RGB, im.BYTE)
local canvas = image:cdCreateCanvas() -- Creates a CD_IMAGERGB canvas
canvas:Activate()
canvas:Background(cd.EncodeColor(255, 255, 255))
canvas:Clear()
fgcolor = cd.EncodeColor(255, 0, 0) -- red
fgcolor = cd.EncodeAlpha(fgcolor, 50) -- semi transparent
canvas:Foreground(fgcolor)
canvas:Font("Times", cd.BOLD, 24)
canvas:Text(100, 100, "Test")
canvas:Line(0,0,100,100)
canvas:Kill()
image:Save("new.bmp", "BMP") </pre>
<p>Check the files <a href="../download/samples_imlua5.tar.gz">samples_imlua5.tar.gz</a>
or <a href="../download/samples_imlua5.zip">samples_imlua5.zip</a> for several samples in Lua. For
some of them you will need also the CD and the IUP libraries. You can also
browse the <a href="../examples/">examples folder</a>. </p>
</body>
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