Optionally, turn the layer mask into an actual alpha channel using Layer → Mask → Apply Layer Mask (but simply exporting the image as PNG will do that for you). Then, just use the bucket-fill tool to fill u the outside (or inside) of your selection with “White” (Which will render the trnaslucent tint transparent), revert back to normal editing by clicking on the quickmask again – and you are done. Add an alpha channel for it with Layers → Transparency → Add Alpha Channel if it doesn’t have one already, and then cut the selection away from the layer (Select → Cut or Ctrl+X). Also, saved the initial image to 16-bit high-color BMP (R5G6B5), and comparison shows the re-loaded BMP and the channel-quantized image are identical (histogram of difference is all 0’s). The most common obscurity is that the term brings up color images which have very saturated colors.

  • How can I select all the contents inside a selected region?
  • There exists also 15 bit versions where also green has 32 steps and the 16th bit in the 2 bytes per a pixel system is used to transparency or some other information.
  • How to create an animation as .png using Gimp that cycles between the two images by gradually morphing them together in a loop back-and-forth?
  • When you export to GIF, the image is automatically color indexed but there are no options.

Complex images can well look acceptable, no matter blue and red has only 32 brightness steps and green has 64. Try color selecting the stroke with the Magic Wand (adjust the tolerance at the top to refine the selection) then using any of the other selection tools like the Rectangle Marquee tool for example, hold shift and select the area within. With the grayscale image layer visible, open the Channels dialog, right-click one of the Red/Green/Blue channels (they should all be identical) and select Channel to Selection.

(also available by right-clicking the layer in the Layers dialog). I have two images (For the sake of simplicity, Image1 and Image2). Also for animation on the web better to export as GIF. Say a portrait is in color, and you duplicate it but in black-and-white. There’s a bit more banding in gradients perhaps.

How to morph between two images as an animation?

Also see How can I select the convex hull of an existing selection? On selecting the red line we will end up with an outer and an inner selection of the area enclosed. Holding Alt subtracts from the current selection. In the Selection menu, I can invert the selection, but that grabs everything.

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In this example I’ve chosen Red 5bit, Green 6bit, Blue 5bit (total 16bit). Searching for “high color” seems to give some obscure information, too. That’s because 5 bit quantization can show only every 8th level of the normal 256 level RGB system. The curves adjustment dialog showed in my 1st screenshot the level histogram of blue. The next one has only 32 brightness steps. Some banding can be seen because the steps have different widths on the screen due the low pixels per inch resolution.

I haven’t tried this for high color coded files, but now and then I meet a CMYK jpg which looks like it has wrong colors when watched in program which knows only RGB. Finally we can successfully use a wrong display method for image files which use different than normal color coding. The result surely looks oversaturated if the limited palette uses only saturated colors. Above the diagonal the colors are quantized to high color levels with curves as shown above. The colors are unedited below the white diagonal.

Basically you set it up by applying points to a source image on one layer, and then move them to a target layer. If you check the file properties, it should show as a 16bit image. I suppose after doing this, you could open it up again in GIMP then export as an RGB PNG, but the PNG format doesn’t support this actual bit depth. As far as I know, you can only do this in GIMP when exporting as a Windows BMP image (.bmp file).

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I’d like to select the border AND the inner contents so I can produce something like this (sloppily done here with the Lasso) I have the the outline of a state with a discrete colorful border. There daman game online is also a similar Unified Transform tool (Shift+T) in GIMP (which is free). You put the 4 corner handles of the tool on the 4 corners of what should be a rectangle, and let it work its magic.

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(Base image based on this photo by John Fielding, used under the CC-By-SA 2.0 license; alpha mask created by me using the GIMP’s Sphere Designer tool.) When you export to GIF, the image is automatically color indexed but there are no options. How to create an animation as .png using Gimp that cycles between the two images by gradually morphing them together in a loop back-and-forth? Little different from a normal 8bit per channel RGB (24bit) image to be honest. You can quantize a normal srgb image which has 256 steps for each channel.

Steps By Step:

High color was a step to better colors in the era when color was a new thing in low cost computers. I have gimp installed, but am also open to using web tools or even command line tools. Eventually it was not possible to tell in the selection editor if i was adding anything or not. As a result, I could select much of the outline by Shift clicking with the select by Color, on different pixels of the outline… I had an outline in an image which i wanted to select, followed by the entire interior as described in this question.

Edit: even faster method:

In 16 bit high color system (2 bytes per pixel) Red and Blue had 32 brightness steps. I don’t actually need the image to export as a 16bit/px image format, but I do want to see what it would look like. I would like to convert an image in to 16bit high-color. In order for it to work, I first had to add some Fuzzy Selection of contiguous regions by color, inside the outline selection. Holding Shift (while dragging a selection) with a selection tool adds the new selection to the current selection. You can utilize multiple selection tools for a single selection.

I’ve tried selecting the entire border using the fuzzy select (magic wand) or select by color but this only gives me the border itself. How do I create a free form selection around the document in GIMP, and crop it to a perfect rectangle, gradually compacting/stretching the content so that the document looks perfect? I found a way that in my opinion is better in certain situations where you may want to edit both the transparency layer and the image. @IlmariKaronen answer is correct but assumes a little bit of gimp knowledge, so I am writing a step by step guide here, so it’s easier to follow for people with zero gimp knowledge.

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  • An example is editing using text as the transparency mask.
  • Now it’s much easier to use the perspective tool in “Corrective (Backward)” mode.
  • In this example I’ve chosen Red 5bit, Green 6bit, Blue 5bit (total 16bit).
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Just that thing justifies the idea of the high color. The problem was that the small amount of memory in computers and slow calculations force low cost systems use quite sparse set of samples of the color range of the display. Here’s a simple way to let the fuzzy select drive the entire process. So, after selecting the border itself with the magic wand as you did above, click on the small “hidden” button to the left of the horizontal scroll bar. How can I select all the contents inside a selected region?

The best way is to use Gimp’s Perspective tool in Corrective mode. Now it’s much easier to use the perspective tool in “Corrective (Backward)” mode. By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy. An example is editing using text as the transparency mask. It doesn’t matter what you choose as the mask, since we’ll be replacing it shortly. As part of its international business, the Bank supports clients with German connectivity and companies operating in selected future-oriented industries.

I allows you to paint on the selection itself as if it were the image – The guide assumes the alpha channel is to be found as a component of another image. The layer mask you just added should be selected for editing; if not, select it with Layer → Mask → Edit Layer Mask (or just click the mask in the Layers dialog). Now run the Morph (interactive) filter in G’MIC, make sure to set it to “all layers”, hit OK, and then close two little preview Windows that open. Here’s another example made with the same filter, this one just has four layers to start with, the first is colour, second B&W, third B&W, and the fourth colour.

But as said, the effect is difficult to see in complex images. There exists also 15 bit versions where also green has 32 steps and the 16th bit in the 2 bytes per a pixel system is used to transparency or some other information. In the common high color system the 16th bit is given to green, because the eye is said to be most sensitive to see the striping for green gradients. The image turns to quite yellow due the reduction of blue. Here it’s done for blue (sorry for using Krita, but it’s the same in all common image editors) RGB displays did show quite the same range of colors as today.