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Topic: Image function

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	image :: Functions (MATLAB Function Reference)
		A true color image does not use a colormap; instead, the color values for each pixel are stored directly as RGB triplets.
		You cannot interactively pan or zoom outside the x-limits or y-limits of an image, unless the axes limits are already been set outside the bounds of the image, in which case there is no such restriction.
		indexed image, there is an offset; the value 0 points to the first row in the colormap, the value 1 points to the second row, and so on.
	www.mathworks.com /access/helpdesk/help/techdoc/ref/image.html (914 words)

	55:148 Dig. Image Proc. Chapter 4, Part 3 (Site not responding. Last check: 2007-10-22)
		The derivative of the harmonic function sin (nx) is n cos (nx); thus the higher the frequency, the higher the magnitude of its derivative.
		Input to the conrner dector is the gray-level image.
		The image function f is approximated in the neighborhood of the pixel (i,j) by a cubic polynomial with coefficients c_k.
	www.icaen.uiowa.edu /~dip/LECTURE/PreProcessing3.html (5405 words)

	Nikon MicroscopyU: Modulation Transfer Function
		Therefore, the optical transfer function is a spatial frequency-dependent complex variable whose modulus is the modulation transfer function, and whose phase is described by the phase transfer function.
		In this case, the modulation transfer function is utilized to calculate transfer of contrast from the specimen to the image produced by the microscope.
		The modulation transfer function is also related to the point spread function, which is the image of a point source of light (commonly referred to as the Airy disk) from the specimen projected by the microscope objective onto the intermediate image plane.
	www.microscopyu.com /articles/optics/mtfintro.html (4055 words)

	Image Mapping Function
		An instance of this DRM class specifies how the given is to be mapped onto a given textured object, including the mapping method, the projection, and how instances (if present) are to be treated if they fall outside the image space bounded by (0, 0), (1, 1).
		The second , if image_detail_mapping is SE_TRUE, would then be the imagery that is added to polygon when the eyepoint is so close to the polygon that the main image texels are no longer useful for texturing the polygon.
		The Mapping Function> for this case specifies an Anchor>, while the object to be textured does not specify instances.
	www.sedris.org /sdk_4.0/docs/tech/drm/classes/ImageMappingFunction.htm (1167 words)

	Module PIL.Image
		This is a lazy operation; this function identifies the file, but the actual image data is not read from the file until you try to process the data (or call the load method).
		The mask image must have the same size as the image, and be either a bi-level image (mode "1") or a greyscale image ("L").
		The function is called once for each possible pixel value, and the resulting table is applied to all bands of the image.
	mailman.eng.auburn.edu /doc/python-imaging-doc/PIL.Image.html (2829 words)

	Peter's Functions for Computer Vision
		This test image indicates the importance of phase congruency irrespective of the angle at which congruency occurs at and, up to a point, irrespective of the rate at which the amplitude spectrum decays with frequency.
		shapeletsurf.m Function reconstructs an estimate of a surface from its surface normals by correlating the surface normals with that those of a bank of shapelet basis functions.
		This is the objective function passed to the optimisation function by lensparam.m.
	www.csse.uwa.edu.au /~pk/Research/MatlabFns (2594 words)

	Scope Image Function Library (Site not responding. Last check: 2007-10-22)
		For images which are stored in a block by block instead of line by line basis, the next two words give the block size in x and y respectively.
		The header structure for the input image is pointed to by ptri and the image data is pointed to by inim.
		Similarly with ptro and outim for the output image, and kp and kim for the kernel.
	www.cee.hw.ac.uk /~mjc/scope/scope/program/scope_lib.htm (4305 words)

	Image Processing
		The design of image filters which utilize discrete convolution is based very closely on the theory of continuous convolution and the properties of the continuous functions which might make appropriate convolution kernels.
		Because edges typically correspond to points in the image where the gray value changes significantly from one pixel to the next (in particular, the magnitude of the first derivative is large), edge detectors are likely to pick out areas where there is an abrupt change in gray value.
		To reduce the effect of a noisy image on the operator output, a smoothing operator (a Gaussian blur, for example) is often applied prior to the Laplacian operator.
	people.reed.edu /~nobles/thesis/node3.html (2252 words)

	A DB2 UDB still image extender
		Rolling the image means that the number of columns or rows is moved from the end of the image to the beginning.
		A positive angle causes the upper-left corner of the image to be moved upwards, and a negative angle shears the upper-left corner of the image downwards.
		The image is sheared along the X dimension, and then the resulting images was rolled to the right; i.e., 50 columns in the image were stripped away from the right side and appended on the left border.
	www-128.ibm.com /developerworks/db2/library/techarticle/dm-0504stolze (5986 words)

	OWL at Purdue University: Image in Poetry
		Whereas before the image was seen merely as a representation of an object in the world, Bachelard believed that the image was its own object and that it could be experienced by a reader who allowed him or herself the opportunity to "dream" the image (the "revery" of reading poetry).
		Where the image comes from is an issue that will probably never be solved, but suffice to say that if you approach its making as a mystery (and allow it to simply happen without too much intellectualizing) you will at least keep in line with one major aspect of its origin, that of the unknown.
		"[The literary image] is polyphonic because it is polysemantic.
	owl.english.purdue.edu /handouts/general/gl_image.html (1804 words)

	DevPapers - article An Image Verification Tutorial (Site not responding. Last check: 2007-10-22)
		To create our image, we need to send a header telling the connection that we are about to send an image, we do that with the header function:
		The first argument is the width of the image in pixels, the second, you guessed it, is the height.
		The first is the image pointer variable, the second argument can be any number from 1 to 5,(which calls for one of the built in fonts).
	www.devpapers.com /article/149 (1097 words)

	Dynamic Image Resizing
		For example, you can change the size of an image causing the other contents on the page to automatically to be layed out just as if the image started at that size.
		To make image resizing work on both browsers, we must limit ourselves to what is possible in Netscape and only manipulate absolutely positioned elements.
		The sizeTo function is was written to abstract away as many of the differences as possible.
	www.siteexperts.com /tips/elements/ts21/page1.asp (663 words)

	The Image Module
		For some modes, the image memory will share memory with the original buffer (this means that changes to the original buffer object are reflected in the image).
		Creates a new image with the given size, and the same mode as the original, and copies data to the new image using the given transform.
		For each pixel (x, y) in the output image, the new value is taken from a position (a x + b y + c, d x + e y + f) in the input image, rounded to nearest pixel.
	www.pythonware.com /library/pil/handbook/image.htm (3269 words)

	Fourier transform theory
		The Fourier transform is simply a method of expressing a function (which is a point in some infinite dimensional vector space of functions) in terms of the sum of its projections onto a set of basis functions.
		Since an image is only defined on a closed and bounded domain (the image window), we can assume that the image is defined as being zero outside this window.
		In images we are concerned with spatial frequency, that is, the rate at which brightness in the image varies across the image, or varies with viewing angle.
	homepages.inf.ed.ac.uk /rbf/CVonline/LOCAL_COPIES/OWENS/LECT4/node2.html (1260 words)

	The ChanGe Image Function! (Site not responding. Last check: 2007-10-22)
		OverFileName should be replaced with the file name of the image that will be shown when the mouse pointer is over the image.
		OutFileName should be replaced with the file name of the image that will be shown when the mouse pointer is not over the image.
		If you want the image to be loaded in the background, you must change everything all over again, to this...and again, put this between the head commands.
	members.aol.com /sasecool/mouse.html (264 words)

	ET 380 Image Assignment (phase 2) Dr (Site not responding. Last check: 2007-10-22)
		Currently the last line of the image is stored first and therefore the image is stored “upside down”.
		Move the code that changes the image brightness to a function, the function will prompt the user for the amount of lightening/darkening desired.
		Add a menu function that returns an upper case L for loading an image, S for saving an image, B for changing the brightness of the image, and H for sHarpening the image.
	people.msoe.edu /~woelfl/image.htm (367 words)

	REBOL/View 1.3 Image Datatype
		The LOAD function works as it did in prior versions of REBOL with the exception that the result is an image datatype that is accessed as pixels rather than as RGB bytes.
		function will return the index offset as the number of pixels from the head of the image (to be consistent with other series datatypes).
		This is an acceptable condition for images because it allows modification of the series of image pixels as well as the size without unnecessary truncation of the trailing pixels.
	www.rebol.com /docs/image.html (4081 words)

	Image Properties :: Functions (MATLAB Function Reference)
		causes handles to be visible from within callback routines or functions invoked by callback routines, but not from within functions invoked from the command line.
		This might be necessary when a callback invokes a function that might potentially damage the GUI (such as evaluating a user-typed string) and so temporarily hides its own handles during the execution of that function.
		When a handle is not visible in its parent's list of children, it cannot be returned by functions that obtain handles by searching the object hierarchy or querying handle properties.
	www.mathworks.com /access/helpdesk/help/techdoc/ref/image_props.shtml (1928 words)

	Image Toolbar and Menu
		The following image functions can be used whenever an image is displayed in the image window in the Scan- or Archive Station.
		In the Archive station you can also select several images and then perform the image function as a batch.
		The Reverse function flips the image horizontally, along the vertical axis.
	www.ideal.com /support/IDEALScanOS/scantrack/image_functions.htm (403 words)

	Victor Library Reference, SJ - z (Site not responding. Last check: 2007-10-22)
		The tgainfo function is used to identify the type and size of the image in the file to permit allocating enough memory to load the file.
		The purpose of the tiffinfo function is to identify the type and size of the image in the file to permit allocating enough memory to load the file.
		Declare Function TWscancountimages Lib "VICTW32.DLL" (ByVal hWnd As Integer, ByRef resimg As imgdes, ByRef scanrect As RECT, ByVal showIU As Integer, ByVal maxPages As Integer, ByVal saveScan As SCNFCT) As Integer
	www.catenary.com /docs/ref-sj-z.html (6475 words)

	Image Matching (Site not responding. Last check: 2007-10-22)
		The image matching problem refers to a process of establishing the correspondence between each pair of visible homologous image points on a given pair of images.
		Each pair of the images has no less than 50% overlapping, which is defined as the minimum ratio between the scene surface commonly depicted in both images over the surfaces depicted in each one of them.
		Notice the low-pass characteristic of the scale function and the high-pass characteristic of the wavelet function.
	www.cg.tuwien.ac.at /studentwork/CESCG/CESCG-2000/JWalder (2841 words)

	Image Segmentation Using Pfinder
		The function returns the segmented image in the alpha channel which can be used to mask out the red, green, and blue channels or be used as transparency mapping in a texture map.
		At the end of the function, the segmented image is copied to the alpha channel.
		The head tracking function could also be further improved by adding knowledge of past head location and determining the head size by looking at regions surrounding the top-center location of the head.
	www.nbb.cornell.edu /neurobio/land/OldStudentProjects/cs490-95to96/sadahiro/cs490rpt.html (1368 words)

	image.decompose - Function
		The algorithm between the decomposition is based on the function clfind described in Williams et al 1994, which uses a contouring procedure whereby a closed contour designates a separate component.
		The program first separates the image into clearly distint 'regions' of blended emission, then contours each region to determine the areas constituting each component and passes this information on to the fitter, which determines the component list.
		The contour deblending can optionally be replaced with a simpler local maximum scan, and the fitting can be replaced with a moment-based estimation method to speed up calculations on very large images or if either primary method causes trouble, but in general this will impede the accuracy of the fit.
	aips2.nrao.edu /stable/docs/user/General/node59.html (267 words)

	PHP: getimagesize - Manual (Site not responding. Last check: 2007-10-22)
		image file and return the dimensions along with the file type and a height/width text string to be used inside a normal
		But i got a problem - if source image is in the area with need of authorization then the functions that read some files from that place (i.e.
		If the image is smaller or equal than the defined maximums, then it's showed without resizing.
	us2.php.net /function.getimagesize (2526 words)

	[No title]
		; The main reason for using this function is the options to ; also process the pixels at edges and corners of image, and, ; to apply iterative smoothing simulating convolution with Gaussian, ; and/or to convolve image with a Gaussian kernel.
		Note that ; external function convolve.pro handles both cases) ; ; OPTIONAL INPUT/OUTPUT KEYWORD: ; PSF = Array containing the PSF used during the convolution.
		Typically, on a first call set PSF to an undefined ; variable, which can be reused for subsequent calls to prevent ; recalculation of the Gaussian PSF.
	idlastro.gsfc.nasa.gov /ftp/pro/image/filter_image.pro (613 words)

	New image scaling function in the code archives! (Site not responding. Last check: 2007-10-22)
		I first create a scratch image that is the same width as the destination image, and the same height at the source image.
		I think the copyrect function must be hardware accelerated, because I'm actually moving more data around this way than if I scaled the image the traditional way.
		Although my function comes in handy when you already have an app that is using ResizeImage but pauses for one or two seconds whenever you hit that button.
	www.blitzbasic.com /Community/posts.php?topic=44357 (1550 words)

	search.cpan.org: Image::Info - Extract meta information from image files
		This function takes the name of a file or a file handle as argument and will return one or more hashes (actually hash references) describing the images inside the file.
		If a reference to a scalar is passed as argument to this function, then it is assumed that this scalar contains the raw image data directly.
		The image_info() function returns meta information about each image in the form of a reference to a hash.
	search.cpan.org /~gaas/Image-Info-1.16/lib/Image/Info.pm (800 words)

	ImageUnload(PLOADED_IMAGE) function [Base] (Site not responding. Last check: 2007-10-22)
		The ImageUnload function is used to deallocate resources from a previous call to the ImageLoad function.
		All ImageHlp functions, such as this one, are single threaded.
		Therefore, calls from more than one thread to this function will likely result in unexpected behavior or memory corruption.
	msdn.microsoft.com /library/en-us/debug/base/imageunload.asp?frame=true (190 words)

	Disable image toolbar function for IE6. Hypergurl.com
		This simple html script will disable the IE6 function that automatically prompts your visitor to save your graphics.
		Simply place the script provided below into the of your html document and the image toolbar function of your visitors browser will be disabled.
		To disable the image toolbar function for a single image you add the script below to your image's html source.
	www.hypergurl.com /imagetoolbar.html (146 words)

	Fastgraph/Image Function List (Site not responding. Last check: 2007-10-22)
		Legacy functions are still included in Fastgraph/Image, but they have been replaced by other functions and may not be supported in future releases.
		We therefore recommend that new applications avoid using the legacy functions, and where possible, you eliminate them from existing programs.
		Legacy functions are identified as such in the function descriptions; the "Replaced by" section lists the individual function or group of functions with the same or enhanced functionality.
	www.fastgraph.com /help/fastgraph_image_function_list.html (159 words)

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