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I ve already covered a couple of image resizing plug-ins in this chapter, including Image Resize and Image Thumbnail So, you may wonder why the need for yet another The reason is that a standard enlargement, even if it resamples the original image rather than merely resizing the pixels, will still result in a pixelated blow up And the more you enlarge an image, the more it will pixelate For example, imagine increasing the size of an image by a factor of ten in each dimension; this results in the contents of every original pixel now occupying 100 pixels Even with resampling the pixels nearby, this will still result in an exceedingly blocky enlargement with only the edges of each block of 100 pixels showing any differences Now imagine resizing by just doubling each dimension, which results in the data from each original pixel only occupying four pixels With resampling of the surrounding pixels, this new group of four will contain averaged values from similar pixels, and therefore pixelation will be minimized as the color and brightness information is spread out smoothly And that s how this plug-in works To achieve a smoother enlargement it resamples an original image upwards just a little at a time, spreading the color and brightness smoothly at each enlargement until the desired final dimensions are reached If you look closely at Figure 4-6, you ll see that an original thumbnail of 100 75 pixels has been resampled in a single pass to 285 214 pixels, and that this eightfold increase in size has introduced substantial pixelation into the left-hand enlargement The increase in size is calculated by multiplying each pair of dimensions together and then dividing the larger result by the smaller Therefore, 100 75 is 7,500, and 285 214 is 60,990, and so 60,990 / 7,500 gives an enlargement amount of 8132 times The image on the right, however, was passed through the Image Enlarge plug-in and, as you can see from the insets, there is almost no pixelation Instead, the blockiness has been replaced with even transitions of color and brightness Of course, the image appears a little blurred, but what do you expect from creating picture data out of thin air The new picture is eight times the size and therefore comprises over 85 percent made up (or interpolated) data But this plug-in even gives you control over that because you can specify the amount of smoothing to apply to get just the right balance between pixelation and blurring.

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Dec 25, 2017 · Let's we initiate with a requirement of printing a payment receipt on demand using ASP.NET and C# language for this example. Don't worry will ...

After this, the variable left is assigned the first 4 digits of number, cclen is set to the card number s length, and chksum is initialized to 0:

Nothing is more frustrating than having the project team onboard, ready to work, and not having the right tools they need to do the job As part of the HR management plan, you need to ensure you have all the right people and right tools to get the job done properly This is where the staffing management plan fits in As the project manager you need to get the team productive immediately; otherwise, they are sitting around, the schedule slips, and extra costs are incurred

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Upload and Download PDF file Database in ASP.Net using C# and ...
Feb 1, 2019 · The PDF file will be uploaded using FileUpload control and will be inserted into SQL Server Database Table. A GridView control will display the PDF file present in the SQL Server Database Table along with an option to download the selected PDF file from Database in ASP.Net.

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Next, several if() else if() statements check that left contains a valid sequence that matches a known brand of credit card and, if it does, that the card number length in cclen is correct for the card type If left doesn t match a known card, or it matches one but cclen is the wrong length, then the plug-in returns false to indicate that the card didn t verify If these initial tests are passed, the card s checksum is then calculated using an algorithm invented by IBM scientist Hans Peter Luhn (for further details see enwikipediaorg/wiki/Luhn_ algorithm), like this:

FIGURE 4-6 Even with resampling, enlarging a picture causes pixelation but this plug-in helps reduce it, as shown by the zoomed-in insets

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