CHANGELOG.md

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# Changelog

This file documents significant changes between KleidiCV releases.

KleidiCV uses [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

This changelog aims to follow the guiding principles of
[Keep a Changelog](https://keepachangelog.com/en/1.1.0/).

## 0.3.0 - not yet released

### Added
- Remap implementation
  - 2-channel s16 and s16+u16 fixed-point coordinates and 1-channel u8 input.
  - 2-channel s16 + 5+5 bits' fractions fixed-point coordinates and 1-channel u8 input.
- Implementation for cv::pyrDown in the OpenCV HAL.
- Sum implementation for 1-channel f32 input (not exposed to OpenCV)

## 0.2.0 - 2024-09-30

### Added
- Exponential function for float.
- Bitwise and.
- Gaussian Blur for 7x7 kernels.
- Gaussian Blur for 15x15 kernels.
- Separable Filter 2D for 5x5 kernels (not exposed to OpenCV).
- Enable specifying standard deviation for Gaussian blur.
- Scale function for float.
- Add, subtract, multiply & absdiff enabled in OpenCV HAL.
- MinMax enabled in OpenCV HAL, float version added.
- Resize 4x4 for float.
- Resize 8x8 for float.
- Resize 0.5x0.5 for uint8_t.
- Conversion from float to (u)int8_t and vice versa.
- KLEIDICV_LIMIT_SME2_TO_SELECTED_ALGORITHMS configuration option.
- Conversion from non-subsampled, interleaved YUV to RGB/BGR.
- InRange single channel, scalar bounds for uint8_t and float.

### Changed
- Filter context creation API specification.
- Gaussian Blur API specification.
- In the OpenCV HAL, the following operations are multithreaded:
  * cvtColor
  * convertTo
  * exp
  * minMaxIdx
  * GaussianBlur
  * Sobel
  * resize

### Removed
- Support for OpenCV 4.9.
- threshold from OpenCV HAL.

## 0.1.0 - 2024-05-21

Initial release.