Packages of Elger van Boxtel
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| All class groups | > | All authors | > | Packages of Elger van Boxtel (3) | > | Mission progress status | > | Reputation |
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| This class can perform multiple image manipulation operations. It provides a chained interface, so different operations can be perform a given image in the same code line. Currently it can perform the following filtering operations: - Brightness - Colorize - Comic contrast convolution 3x3 filters darken dodge edge detect emboss find edges flip (horizonal, vertical, both) gamma correction gaussian blur grayscale mean remove motion blur negative noise old cardboard opacity pixelate random blocks with custom size and color replace color reverse scatter selective blur semi grayscale sepia sepia fast sharpen smooth sobel edge detect sobel edge enhance (based on convolution matrix) true color vignette The package can also perform overlay operations with multiple images stacked over each other in layers. Several options can be configured like overlay opacity, start and end position and fill options. The package can also create reflection effects creating a new image below with the reflex of another image. It can also create images with the repetition of the same image multiple times on the same canvas until it fits. Images can also be rotated by 90, 180, 270 degrees with an optional background color for those oncovered edges. The package can also create thumbnails on the fly using several strategies like: - Centered strategy: create a thumb from the center of an image. Ideal for creating square thumbs from not so square images - Max strategy: resize the image to a max width or height keeping proportions. For example: when resizing an image (300x750) on max 500 pixels, the resulting image will be 200x500 pixels - Percentage strategy: reduce the size of an image with a certain percentage. It can as well create watermark to an image with possible positions at: top, bottom, left, right, center, top right, top left, bottom right, bottom left. |
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| This package can be used to read and write files and other types of streams. It provides a base abstract class that provides functions for performing the basic open, read, write and close file operations. Subclasses are also provided to implement buffered read and write stream operations. |
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