https://github.com/academysoftwarefoundation/rawtoaces-data

Camera data for use with rawtoaces
https://github.com/academysoftwarefoundation/rawtoaces-data

Last synced: 4 months ago
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Camera data for use with rawtoaces

• Host: GitHub
• URL: https://github.com/academysoftwarefoundation/rawtoaces-data
• Owner: AcademySoftwareFoundation
• License: apache-2.0
• Created: 2022-09-12T20:18:18.000Z (almost 4 years ago)
• Default Branch: main
• Last Pushed: 2025-11-27T20:08:31.000Z (7 months ago)
• Last Synced: 2026-01-15T04:48:44.841Z (5 months ago)
• Language: Shell
• Homepage:
• Size: 493 KB
• Stars: 2
• Watchers: 7
• Forks: 1
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# Data repository for the RAW to ACES Utility 

## Table of Contents

1. [Introduction](#introduction)

2. [Package Contents](#package-contents)

3. [JSON Schema for Spectral Datasets](#schema)

4. [License](#license)

## Introduction

This is the data repository for the RAW to ACES Utility or `rawtoaces` (https://github.com/AcademySoftwareFoundation/rawtoaces), a software package that converts digital camera RAW files to ACES container files containing image data encoded according to the Academy Color Encoding Specification (ACES) as specified in [SMPTE 2065-1](http://ieeexplore.ieee.org/document/7289895/). The output image complies with the ACES Container specification [(SMPTE S2065-4)](http://ieeexplore.ieee.org/document/7290441).

## Package Contents

The repository contains the following:

* [`data/camera/`](./data/camera) - camera spectral sensitivities

* [`data/illuminant/`](./data/illuminant) - light source spectral power distribution

* [`data/cmf/`](./data/cmf) - color matching functions (CIE-1931)

* [`data/training/`](./data/training) - 190 training patch dataset

	

## JSON Schema for Spectral Datasets

The schema takes its roots in [IES TM-27-14](http://www.techstreet.com/standards/ies-tm-27-14?product_id=1881073) but implements support for multiple spectral datasets while adopting [JSON](http://www.json.org/) over [XML](https://www.w3.org/TR/REC-xml/) for the simplicity of its grammar.

`rawtoaces` expects the spectral dataset to have the following shape: **(380, 780, 5)**, i.e. starting from 380nm and ending at 780nm with a 5nm interval/bin size.

The attributes are defined as follows:

- `header`

    - `schema_version`

        - **description**: *Required*, schema version of the current document.

        - **type**: `"string"`

    - `comments`

        - **description**: *Optional*, additional information for the spectral dataset.

        - **type**: `["string", "null"]`

    - `description`

        - **description**: *Required*, description of the spectral dataset.

        - **type**: `"string"`

    - `document_creation_date`

        - **description**: *Required*, document creation date expressed as per RFC 3339 - Date and Time on the Internet: Timestamps, e.g. 2017-01-01T12:00:00Z.

        - **type**: `"string"`

        - **format**: `"date-time"`

    - `document_creator`

        - **description**: *Required*, creator of the document, e.g. company, individual, laboratory, etc.

        - **type**: `"string"`

    - `laboratory`

        - **description**: *Optional*, laboratory or company that performed the measurements.

        - **type**: `["string", "null"]`

    - `license`

        - **description**: *Required*, usage license of the document, e.g. "CC-BY-NC-ND".

        - **type**: `["string"]`

    - `manufacturer`

        - **description**: *Optional*, manufacturer of the device being tested.

        - **type**: `["string", "null"]`

    - `measurement_equipment`

        - **description**: *Optional*, measurement equipment used to test the device.

        - **type**: `["string", "null"]`

    - `model`

        - **description**: *Optional*, model of the device being tested.

        - **type**: `["string", "null"]`

    - `type`

        - **description**: *Optional*, type of the spectral dataset.

        - **type**: `["string", "null"]`

    - `unique_identifier`

        - **description**: *Optional*, generated unique identifier for the document, e.g. SHA256.

        - **type**: `["string", "null"]`

- `spectral_data`

    - `bandwidth_FWHM`

        - **description**: *Optional*, spectro-radiometer full-width at half-maximum bandwidth in nm.

        - **type**: `["number", "null"]`

    - `bandwidth_corrected`

        - **description**: *Optional*, whether bandwidth correction has been applied to the spectral data.

        - **type**: `["boolean", "null"]`

    - `data`

        - **description**: *Required*, defines the spectral dataset, requiring at least one *key* from `index` whose *value* is an *object* containing wavelength/value pairs.

        - **type**: `"object"`

    - `index`

        - **description**: *Required*, indexes the spectral dataset.

        - **type**: `"object"`

    - `reflection_geometry`

        - **description**: *Required* if `units` is *reflectance*, reflection geometry attributes as per CIE 15:2004.

        - **type**: `["string", "null"]`

        - **enum**: `["di:8", "de:8", "8:di", "8:de", "d:d", "d:0", "45a:0", "45c:0", "0:45a", "45x:0", "0:45x", "other", null]`

    - `transmission_geometry`

        - **description**: *Required* if `units` is *transmittance*, transmission geometry attributes as per CIE 15:2004.

        - **type**: `["string", "null"]`

        - **enum**: `["0:0", "di:0", "de:0", "0:di", "0:de", "d:d", "other", null]`

    - `units`

        - **description**: *Required*, unit or quantity of measurement for the spectral dataset.

        - **type**: `"string"`

        - **enum**: `["flux", "absorptance", "transmittance", "reflectance", "intensity", "irradiance", "radiance", "exitance", "R-Factor", "T-Factor", "relative", "other"]`

The full JSON schema for spectral datasets can be used to validate a new user file using a [validator](http://www.jsonschemavalidator.net/) and is defined in [schema_1.0.0.json](./schema_1.0.0.json)

## Licence

rawtoaces-data is licensed under the [Apache-2.0 license](./LICENSE).