Operator Library: Prototype
![[Warning]](../common/images/admon/warning.png) |
Warning |
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Disclaimer: This module is part of the prototype library. It is absolutely preliminary and subject to extensive changes, even removal. Therefore, this module must not be used for productive designs. It is included for testing purposes only. |
The module RGB2XYZ converts the color space from an anticipated sRGB, white point D65 to CIE XYZ. The coefficients are parametrizable to allow customized transformations. Since the XYZ values range [0, 100] the output bit width is 7-bit, however if more bits are selected at the output link the values are scaled by 2^(n-7) to make a higher precision available.
The transformation matrix is defined by the parameters TransMatrixX1 to TransMatrixZ3. These parameters are a 3x3 matrix containing double precision coefficients. The following formula represents the transformation algorithm.
| Property | Value |
|---|---|
| Operator Type | O |
| Input Link | I, image data input |
| Output Link | O, image data output |
| Link Parameter | Input Link I | Output Link O |
|---|---|---|
| Bit Width | 24 | [21, 63] |
| Arithmetic | unsigned | as I |
| Parallelism | any | as I |
| Kernel Columns | 1 | as I |
| Kernel Rows | 1 | as I |
| Img Protocol | {VALT_IMAGE2D, VALT_LINE1D, VALT_PIXEL0D} | as I |
| Color Format | VAF_COLOR | as I |
| Color Flavor | FL_RGB | FL_XYZ |
| Max. Img Width | any | as I |
| Max. Img Height | any | as I |
| TransMatrixX1 | |
|---|---|
| Type | static read/write parameter |
| Default | 0.4124 |
| Range | [0, 1] |
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Defines one coefficient of the transformation matrix RGB to XYZ. The value of this coefficient is a double value. |
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| TransMatrixX2 | |
|---|---|
| Type | static read/write parameter |
| Default | 0.3576 |
| Range | [0, 1] |
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Defines one coefficient of the transformation matrix RGB to XYZ. The value of this coefficient is a double value. |
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| TransMatrixX3 | |
|---|---|
| Type | static read/write parameter |
| Default | 0.1805 |
| Range | [0, 1] |
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Defines one coefficient of the transformation matrix RGB to XYZ. The value of this coefficient is a double value. |
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| TransMatrixY1 | |
|---|---|
| Type | static read/write parameter |
| Default | 0.2126 |
| Range | [0, 1] |
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Defines one coefficient of the transformation matrix RGB to XYZ. The value of this coefficient is a double value. |
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| TransMatrixY2 | |
|---|---|
| Type | static read/write parameter |
| Default | 0.7152 |
| Range | [0, 1] |
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Defines one coefficient of the transformation matrix RGB to XYZ. The value of this coefficient is a double value. |
|
| TransMatrixY3 | |
|---|---|
| Type | static read/write parameter |
| Default | 0.0722 |
| Range | [0, 1] |
|
Defines one coefficient of the transformation matrix RGB to XYZ. The value of this coefficient is a double value. |
|
| TransMatrixZ1 | |
|---|---|
| Type | static read/write parameter |
| Default | 0.0193 |
| Range | [0, 1] |
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Defines one coefficient of the transformation matrix RGB to XYZ. The value of this coefficient is a double value. |
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| TransMatrixZ2 | |
|---|---|
| Type | static read/write parameter |
| Default | 0.1192 |
| Range | [0, 1] |
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Defines one coefficient of the transformation matrix RGB to XYZ. The value of this coefficient is a double value. |
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| TransMatrixZ3 | |
|---|---|
| Type | static read/write parameter |
| Default | 0.9505 |
| Range | [0, 1] |
|
Defines one coefficient of the transformation matrix RGB to XYZ. The value of this coefficient is a double value. |
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