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TheJoe.it Into the (open) source

11Dec/111

Tutorial: mosaic “a pallini” type 70 with Gimp

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In today's tutorial we will see how to turn a colored photo in a pixel-art original, useful for creating large prints especially when the quality of the initial image will not let.

We begin with an image of your choice. For this tutorial I suggest colored images particularly because many of the details will be lost in the final result.

21Feb/115

Tutorial: the paradox photo (the “Droste effect”) with Gimp and MathMap

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Today's tutorial is a cross between photography, graphic and Mathematics. Photography because we start from a real photo, and a good photograph is the beginning of a good job, graphic because of the various tweaks that as we make any and Mathematics because the effect scomoderemo today follows strict mathematical rules, nothing is left to chance. For this tutorial we will use Gimp and its plugin MathMap.

1Aug/100

Tutorial: Newsprint retro with Gimp

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Today's tutorial is very fast because the effect is Gimp's native. Transform a RGB image in a 'indexed image in two colors: white and Black. This conversion will give effect to an image and a "newspaper".

First open an image that lends. In this tutorial I will use a landscape, despite the portraits lend themselves more.

12Jun/104

Tutorial: Perspective correction (the linee cadenti) with Gimp

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In this tutorial we deal with correct perspective a photo with Gimp. Often (especially in the narrow streets) having to take pictures of monuments or facades of tall buildings, having available a limited field for framing. It is clear that we will be closer to the monument over the photo will be "far" from axonometrically correct. The perspective correction is also called correction (or modification) the falling lines. This is because taking a picture up close to an architectural one gets the impression that the monument is falling backwards (architectural lines converge upwards.

What we will do today is "straighten" the lines of a facade, Gimp as well as we should have another couple of plugins: "MathMap" and "FX-Foundry".

5May/100

G’MIC, il plugin open source per GIMP… that does it all

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Today let's look at a plugin that I consider interesting from a practical point of view, not only for the ease of use, but also and especially for the many functions that offers.