Git Product home page Git Product logo

Comments (2)

inorichi avatar inorichi commented on June 21, 2024

What steps should be followed here? I have this in mind:

  1. Decode the first frame completely (there's no line by line decoding nor regions)
  2. Move the selected region (if there's any) to the beginning of the array (with memmove), so that we don't need to alloc more memory for a copy.
  3. Create a new container for the scaled image.
  4. Downscale the image (using the container as destination for the pixels) applying some filter: nearest, bilinear, bicubic, lanczos... which one?

from image.

seven332 avatar seven332 commented on June 21, 2024

GIF is an indexed-color image type. The result in your step 1 is the color-index array of the whole first frame (some image information as well). So the step 2 should be generating the selected region raw image(like RGBA array). Then step 3, downscale the image. Maybe the step 2 and the step 3 can combine to save memory.

Bilinear is good enough for downscaling. That is what Android OpenGL ES used in default.

from image.

Related Issues (13)

Recommend Projects

  • React photo React

    A declarative, efficient, and flexible JavaScript library for building user interfaces.

  • Vue.js photo Vue.js

    🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.

  • Typescript photo Typescript

    TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

  • TensorFlow photo TensorFlow

    An Open Source Machine Learning Framework for Everyone

  • Django photo Django

    The Web framework for perfectionists with deadlines.

  • D3 photo D3

    Bring data to life with SVG, Canvas and HTML. 📊📈🎉

Recommend Topics

  • javascript

    JavaScript (JS) is a lightweight interpreted programming language with first-class functions.

  • web

    Some thing interesting about web. New door for the world.

  • server

    A server is a program made to process requests and deliver data to clients.

  • Machine learning

    Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.

  • Game

    Some thing interesting about game, make everyone happy.

Recommend Org

  • Facebook photo Facebook

    We are working to build community through open source technology. NB: members must have two-factor auth.

  • Microsoft photo Microsoft

    Open source projects and samples from Microsoft.

  • Google photo Google

    Google ❤️ Open Source for everyone.

  • D3 photo D3

    Data-Driven Documents codes.