boostorg/gil

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Boost.GIL - Generic Image Library | Requires C++14 since Boost 1.80

Stars: 199
Forks: 171
Open beginner issues: 0
Indexed issues: 72
Avg merge: 1d 14h
Merged PRs (30d): 10

Dominant language: C++
License: BSL-1.0
Last GitHub push: Sep 10, 2026
Latest indexed: Sep 14, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue

Beginner friendly Everything

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permalinks in docs Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

boostorg/gil#790 · Opened Jun 11, 2026
[docs/example] example on how to interoperate with code expecting pixels as raw data Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

boostorg/gil#781 · 6 comments · Opened Dec 8, 2025
[Curious] Will boost.gil be happy to accept `webp` reader/writer into `extension/io`? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

boostorg/gil#779 · 1 comment · Opened Nov 27, 2025
PNG window bits defaults to 9 instead of defaulting to 15 like in libpng. Open

Difficulty 1/5 Under an hour Newbie friendliness 55/100

boostorg/gil#777 · 1 comment · Opened Nov 21, 2025
Running the convolve_2d.cpp test causes an alignment error on ARM Open

Difficulty 1/5 Under an hour Newbie friendliness 45/100

boostorg/gil#734 · Opened May 8, 2023
Alpha-blending Open

cat/feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

boostorg/gil#728 · 4 comments · Opened Feb 16, 2023
Support for reading/writing 1 bit (black/white) BMP images? Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

boostorg/gil#727 · 2 comments · 1 reaction · Opened Feb 11, 2023
Consider moving channel_convert_to_unsigned out of detail namespace Open

cat/refactoring

Difficulty 5/5 Over a week Newbie friendliness 25/100

boostorg/gil#706 · Opened Jul 4, 2022
Fix wrong pixel channel truncation in binary threshold and truncate threshold Open

ext/image_processing

Difficulty 4/5 3-5 days Newbie friendliness 45/100

boostorg/gil#697 · 2 comments · Opened Jun 27, 2022
Compiler warning in pixel.hpp Open

Difficulty 2/5 1-3 hours Newbie friendliness 42/100

boostorg/gil#688 · 3 comments · Opened Jun 17, 2022
libs\gil\test\core\histogram\fill.cpp(64): fatal error C1001: Internal compiler error Open

cat/annoyance core

Difficulty 4/5 3-5 days Newbie friendliness 25/100

boostorg/gil#645 · 5 comments · Opened Apr 12, 2022
ci: Switch CI configuration to boostorg/boost-ci Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

boostorg/gil#642 · 6 comments · Opened Apr 7, 2022
Add support for WebP format? Open

cat/feature ext/io status/need-help

Difficulty 4/5 3-5 days Newbie friendliness 35/100

boostorg/gil#639 · 5 comments · Opened Mar 28, 2022
kernel_2d_fixed giving false assertion errors Open

cat/bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

boostorg/gil#623 · 1 comment · Opened Aug 4, 2021
Matrix like type for GIL Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

boostorg/gil#622 · 2 comments · Opened Jul 31, 2021
ci: Remove use of AppVeyor Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

boostorg/gil#618 · 1 comment · Opened Jun 17, 2021
Add arithmetic operators for float and double grayscale pixels Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

boostorg/gil#615 · Opened Jun 10, 2021
Provide more boundary options in 2D convolution Open

google-summer-of-code

boostorg/gil#610 · 1 assignee · Opened May 24, 2021
Add separate implementation of 2D correlation Open

google-summer-of-code

boostorg/gil#609 · 1 assignee · Opened May 24, 2021
Add "Reflection" option for boundary handling in 1D correlation. Open

google-summer-of-code

boostorg/gil#608 · 1 assignee · Opened May 24, 2021
Replace CMakeSettings.json with CMakePresets.json Open

config/cmake good-first-issue

Difficulty 2/5 1-3 hours Newbie friendliness 42/100

boostorg/gil#598 · Opened Apr 23, 2021
scanlne_reader for istream not worked Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

boostorg/gil#578 · Opened Mar 15, 2021
Bicubic sampler in GIL Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

boostorg/gil#576 · 10 comments · Opened Mar 13, 2021
Move documentation deployment to GitHub Actions Open

cat/documentation good-first-issue

Difficulty 4/5 3-5 days Newbie friendliness 42/100

boostorg/gil#549 · Opened Jan 25, 2021
Text manipulation support? Open

cat/question

Difficulty 5/5 Over a week Newbie friendliness 15/100

boostorg/gil#540 · 5 comments · 1 reaction · Opened Jan 14, 2021
Unified formatting through clang-format Open

cat/annoyance cat/enhancement cat/refactoring status/need-feedback

Difficulty 3/5 1-2 days Newbie friendliness 35/100

boostorg/gil#518 · 11 comments · Opened Aug 27, 2020
Relation between Laplacian and conductivity computation step Open

cat/question google-summer-of-code

Difficulty 4/5 3-5 days Newbie friendliness 20/100

boostorg/gil#517 · Opened Aug 25, 2020
Test channel/test_fixture does not work in BigEndian Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

boostorg/gil#498 · 2 comments · Opened May 19, 2020
algorithm_channel_arithmetic test seems random Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

boostorg/gil#485 · 6 comments · Opened Apr 20, 2020
Add support for building IO against stb_image.h from nothings/stb collection of single-file libraries Open

cat/feature ext/io

Difficulty 4/5 3-5 days Newbie friendliness 35/100

boostorg/gil#484 · 1 comment · Opened Apr 20, 2020
Host test images suite for test/extension/io/ tests Open

cat/enhancement test

boostorg/gil#462 · 1 assignee · Opened Mar 22, 2020
Collection of extensions from TuttleOFX: align, layers, lines, parallel, pattern, shrink, wuline Open

cat/feature ext/toolbox good-first-issue

Difficulty 5/5 Over a week Newbie friendliness 25/100

boostorg/gil#449 · 7 comments · Opened Mar 14, 2020
Broken bit-aligned pixel locator on MSVC++ 64-bit optimized builds only Open

cat/bug core

Difficulty 4/5 3-5 days Newbie friendliness 30/100

boostorg/gil#447 · Opened Mar 10, 2020
Replace apply functions with boost::mp11::mp_with_index Open

cat/enhancement good-first-issue status/need-help

Difficulty 4/5 3-5 days Newbie friendliness 35/100

boostorg/gil#439 · 4 comments · Opened Mar 4, 2020
Add test suite for color_convert and default_color_converter Open

core good-first-issue test

Difficulty 4/5 3-5 days Newbie friendliness 38/100

boostorg/gil#434 · 3 comments · Opened Feb 15, 2020
Issues with endianess: test pixel_iterator fails Open

cat/bug core

Difficulty 4/5 3-5 days Newbie friendliness 35/100

boostorg/gil#431 · Opened Feb 6, 2020
Inconsistency in image and pixel types using floating point channels. Open

cat/bug core

boostorg/gil#407 · 1 comment · 1 assignee · Opened Nov 30, 2019
Possibility to disable (or enhance) logging from png and jpeg extensions (maybe others) Open

cat/feature ext/io status/need-help

Difficulty 4/5 3-5 days Newbie friendliness 35/100

boostorg/gil#402 · 6 comments · Opened Nov 6, 2019
Image Processing docs structure based on "Principles of Digital Image Processing" book Open

cat/documentation cat/enhancement good-first-issue status/need-help

Difficulty 5/5 Over a week Newbie friendliness 25/100

boostorg/gil#396 · 6 comments · 1 reaction · Opened Oct 13, 2019
Possible improvements in convolve_2d function Open

cat/enhancement cat/performance ext/numeric

boostorg/gil#381 · 1 reaction · 1 assignee · Opened Aug 11, 2019
Unify channel index type in nth_channel_view and image_view::num_channels Open

cat/annoyance core

Difficulty 3/5 1-2 days Newbie friendliness 35/100

boostorg/gil#373 · 6 comments · Opened Aug 8, 2019
Add tests for zero-length and other degenerate image files Open

ext/io good-first-issue status/need-help test

Difficulty 3/5 1-2 days Newbie friendliness 35/100

boostorg/gil#371 · Opened Aug 7, 2019
Add select_most_precise<T1, T2> to properly type results of arithmetic operations Open

cat/enhancement core status/need-help

Difficulty 5/5 Over a week Newbie friendliness 25/100

boostorg/gil#363 · Opened Aug 1, 2019
generate_gaussian_kernel and warning C4244: conversion from double to float Open

cat/annoyance ext/numeric

boostorg/gil#362 · 2 comments · 1 assignee · Opened Jul 31, 2019
Add support for writing ASCII flavours of PNM formats Open

cat/feature ext/io good-first-issue

Difficulty 4/5 3-5 days Newbie friendliness 38/100

boostorg/gil#359 · 2 comments · Opened Jul 29, 2019
[ASL] Should fill_pixels work with the view produced by subsampled_view? Open

cat/question

Difficulty 4/5 3-5 days Newbie friendliness 35/100

boostorg/gil#354 · Opened Jul 26, 2019
[gsoc2019] Add tests for adaptive thresholding Open

core good-first-issue google-summer-of-code test

boostorg/gil#353 · 4 comments · 1 assignee · Opened Jul 25, 2019
Make namespace qualification consistent in @simmplecoder's contributions Open

cat/refactoring status/need-feedback

Difficulty 4/5 3-5 days Newbie friendliness 25/100

boostorg/gil#352 · 1 comment · Opened Jul 25, 2019
Add KernelConcept to document and check kernel requirements Open

cat/enhancement ext/numeric

Difficulty 4/5 3-5 days Newbie friendliness 28/100

boostorg/gil#348 · Opened Jul 22, 2019
[kernel-generation] Investigate alternatives for types for kernel generation Open

cat/enhancement cat/feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

boostorg/gil#343 · Opened Jul 21, 2019

boostorg/gil

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