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Image processing (Photoshop or Irfan view): Add canvas of about 5% to each side (test it, usually around 30 pixels) (Photoshop: Image:Canvas Size, relative, 10% width, 10% height) Save as a PNG black/white bitmap (color depth: 2) with transparent background.
Eric's Pixel Expansion (EPX) is an algorithm developed by Eric Johnston at LucasArts around 1992, when porting the SCUMM engine games from the IBM PC (which ran at 320 × 200 × 256 colors) to the early color Macintosh computers, which ran at more or less double that resolution. [5]
A PNG file contains a single image in an extensible structure of chunks, encoding the basic pixels and other information such as textual comments and integrity checks documented in RFC 2083. [8] PNG files have the ".png" file extension and the "image/png" MIME media type. [9]
Instead, a 2:1 pixel pattern ratio would be used to draw the x and y axis lines, resulting in these axes following a ≈26.565° (arctan(1/2)) angle to the horizontal. (Game systems that do not use square pixels could, however, yield different angles, including "true" isometric.)
These three results coincide with gamma correction of the bottom layer with γ=2 (for top black), unchanged bottom layer (or, what is the same, γ=1; for top neutral gray), and γ=0.5 (for top white). The formula used by Photoshop as of 2012 has a discontinuity of local contrast, and other formulas correct it. Photoshop's formula is: [6]
Each raster grid has a specified pixel format, the data type for each number. Common pixel formats are binary, gray-scale, palettized, and full-color, where color depth [4] determines the fidelity of the colors represented, and color space determines the range of color coverage (which is often less than the full range of human color vision).
Paint.NET (sometimes stylized as paint.net) is a freeware general-purpose raster graphics editor program for Microsoft Windows, developed with the .NET platform.Paint.NET was originally created by Rick Brewster as a Washington State University student project, [3] and has evolved from a simple replacement for the Microsoft Paint program into a program for editing mainly graphics, with support ...
Since version 2.6.2, the default filter is light, a filter that is both normalized (value sums up to 1) and color-balanced (eliminate color fringes at the cost of resolution). [ 11 ] Since version 2.8.1, a second implementation exists, called Harmony , that "offers high quality LCD-optimized output without resorting to ClearType techniques of ...