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Convert pdf to jpg or any other format | The ASP.NET Forums
hello ppl. i need to convert pdf document to image file. if the whole document gets ... You may find iTextSharp helpful. ... Pdf has 32 pages and output should be snapshot of 32 jpg files. .... Also, this code is in vb not c# FYI.

lost, making it more difficult to recover information However, reduction in resolution results in reduced memory and computing requirements Hierarchical representation of images allows representation at multiple resolutions In many applications, one can compute properties of images first at a low resolution and then perform additional computations over a selected area of the image at a higher resolution Hierarchical representations are also used for browsing in images We present two commonly used forms of hierarchical representations: pyramids and quad trees Pyramids A pyramid representation of an n x n image contains the image and k reduced versions of the image Usually n is a power of 2 and the other images are n/2 x n/2, n/4 x n/4, ,1 x 1 In a pyramid representation of an image, the pixel at level 1 is obtained by combining information from several pixels in the image at level 1+ 1 The whole image is represented as a single pixel at the top level, level 0, and the bottom level is the original (unreduced) image A pixel at a level represents aggregate information represented by several pixels at the next level Figure 39 shows an image and its reduced versions in a pyramid Here the pyramid is obtained by simply averaging the gray values in 2 x 2 neighborhoods It is possible, however, to devise other strategies to form reduced-resolution versions Similarly, it is possible to taper the pyramid in nonlinear ways An implementational point is that the entire pyramid fits into a linear array of size 2(22Xlevel) Quad Trees A quad tree may be considered an extension of pyramids for binary images A quad tree contains three types of nodes: white, black, and gray A quad tree is obtained by recursive splitting of an image A region in an image is split into four subregions of identical size, as shown in Figure 310 For each subregion, if all points in the region are either white or black, then this region is no longer considered as a candidate for splitting; if it contains pixels of both kinds, it is considered to be a "gray region" and is further split into four subregions An image obtained using this recursive splitting is represented in a tree structure The splitting process is repeated until there are no gray.

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Convert pdf to jpg or any other format | The ASP.NET Forums
hello ppl. i need to convert pdf document to image file. if the whole document gets converted ... Also, this code is in vb not c# FYI. ... addendum -- I see that this code project you've pointed him to does indeed do TIFF and it will ...

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extract JPEG from PDF by iTextSharp . GitHub Gist: instantly share code, notes, and snippets.

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Figure 39: The original image is a 512 x 512 image; its reduced-resolution versions are successively obtained by averaging four points All successive versions are shown here Note that the low resolution images have been enlarged for display regions in the tree Each node in this structure is either a leaf node or has four children-thus the name quad tree Quad trees are finding increasing application in spatial databases Several algorithms have been developed for converting a raster array to a quad tree and a quad tree to a raster array Algorithms for computing several pictorial properties have also been developed The last few years have seen efforts to represent a quad tree using codes to reduce the memory required by pointers

A region can be represented using symbolic characteristics Some commonly used symbolic characteristics are:

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Convert PDF to Image(JPG, PNG and TIFF) in C# .NET - PDF to JPG ...
C# demo to guide how to save PDF page to high quality image, converting PDF to compressed jpg and multipage tiff image in C# language.