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407 Commits (2b8697c1637b8e499874334a9ae332a809af7d3d)
 

Author SHA1 Message Date
  sam 9ba0524b9a * stock.c: the random stock image now creates RGB noise. 16 years ago
  sam 13bbfb8b27 * Start working on colour reduction with a constrained palette. 16 years ago
  sam e50ce5c67a * color.c: implement pipi_brightness() and pipi_contrast(). 16 years ago
  sam 43e5e3a28d * Add a NOTES file for random notes. 16 years ago
  jylam 22b3af001b * Added string.h to list of included files, for memcpy() 16 years ago
  jylam 7c5ed9890f * Removed pipi/fill directory (I thought I had done this before. Hurra Pastis.) 16 years ago
  sam 37ab68e449 * blur.c: improve the Gaussian kernel generation by interpolating its 16 years ago
  sam 18e1cc4471 * Add pipi_invert() to invert an image's colours. 16 years ago
  sam 48b881b6fa * Add pipi_tile, to create image mosaics. 16 years ago
  sam edd4a03a1e * Add the --scale flag. Resizes the image like --geometry, except with 16 years ago
  sam 97930521fc * blur.c: add an argument to the gaussian convolution to specify an angle. 16 years ago
  sam 3bcf099f65 * Allow pipi --blur to specify both the X and Y Gaussian sizes. Now we can 16 years ago
  sam 555ba323e9 * pipi.c: add the --geometry flag (only wxh for now). 16 years ago
  sam b74fad466b * Implement difference, multiply, divide, screen and overlay blend methods. 16 years ago
  sam 1e47505892 * convolution.c: move local function prototypes to convolution_template.h. 16 years ago
  sam b089bc14b6 * context.c: add the "swap" command to swap two images in the stack. 16 years ago
  sam da84205cde * subadd.c: add pipi_sub() and pipi_add() as another way to combine two 16 years ago
  sam a5ceceaf77 * stock.c: allow arbitrary sizes for the bayer stock image, even if they 16 years ago
  sam 6fb5354eff * minmax.c: add pipi_min() and pipi_max() as another way to combine two 16 years ago
  sam 9bd6b555f9 * mean.c: implement pipi_mean() to compute a mean image. 16 years ago
  sam 31fd250bd2 * Support --autocontrast in pipi. 16 years ago
  sam 7f3e08d021 * convolution.c: support for wrap-around in convolutions. 16 years ago
  sam 103e0629a2 * pipi.c: implement the "--gray" flag for grayscale conversion. 16 years ago
  sam ec187df115 * convolution_template.h: split convolution routines into separate functions 16 years ago
  sam 25cdf35a86 * jajuni.c: add Jarvis-Judice-Ninke dithering. It's a Floyd-Steinberg-like 16 years ago
  sam b5500986b2 * floydsteinberg.c: minor optimisation in the FStein error propagation. 16 years ago
  sam b658564a1f * context.c: fix an old bug that was incorrectly rounding down blur values. 16 years ago
  sam ee6e43cf81 * stock.c: generate images with random noise. 16 years ago
  sam eb9a270380 * pipi_dither_ordered() now takes two arguments; any image can be used as 16 years ago
  sam 3014994c61 * codec.c: support for stock images in pipi_load(). 16 years ago
  sam d6b8cca4ec * context.c: implement various dithering commands and Gaussian blur. 16 years ago
  sam 0549f43287 * Start working on "pipi", a command-line libpipi tool. It will be similar 16 years ago
  sam 0f3943d0fe * Add functions that handle a stack-based processing queue. 16 years ago
  sam 1ff729fd7b * convolution.c: fix a small memory leak in the convolution filter. 16 years ago
  sam 77ec441434 * blur.c: implement box blur; currently runs in O(n) but we could make it 16 years ago
  sam b7c2d1f847 * autocontrast.c: simple autocontrast filter; does not work very well. 16 years ago
  sam c269c219b2 * Get rid of test.c, it was no longer useful anyway. 16 years ago
  jylam baa61a9f6d * Handle alpha layer in floodfill (but don't make it conditionnal to the algorithm) 16 years ago
  jylam 290e151913 * First shot of a floodfiller (both u32 and float, 4 neighbours) 16 years ago
  sam 53268650a7 * dbs.c: generate the initial halftone using random dithering instead of 16 years ago
  sam 0eda956bfc * random.c: implement random dithering using a deterministic pseudo-RNG. 16 years ago
  sam 18dd51e1a5 * Dithering algorithms no longer modify the original image. 16 years ago
  sam 2dc8bb35dd * pipi.c: fix a memory leak caused by empty picture having codec_format 16 years ago
  sam 66f9ce5ea4 * pipi.c: implement pipi_copy(). 16 years ago
  sam a17c6753e3 * pixels.c: store byte length and bits-per-pixel value in the pipi_pixels_t 16 years ago
  sam 41efcdecc0 * Prefix dithering functions with _dither_ to avoid namespace cluttering. 16 years ago
  sam 6a3309663e * ordered.c: implement Bayer dithering (pretty trivial). 16 years ago
  sam a6dcd80490 * dbs.c: optimise DBS by ignoring 16x16 cells that had no pixel changes for 16 years ago
  sam 2a3c7ca990 * dbs.c: improve the DBS human visual system kernel by adding two Gaussian 16 years ago
  sam bf31390d1e * sharpen.c: add a sharpen filter example, using our generic convolution 16 years ago