This class implements discrete cosine transform functions.
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#include <DiscreteCosineTransform.h>
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| static void | transform2 (const Scalar *data, const unsigned int xElements, const unsigned int yElements, Scalar *coefficients) |
| | Applies a 2D discrete cosine transform for a given 2D data block.
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| static void | transform2 (const Scalar *data, const unsigned int xElements, const unsigned int yElements, const unsigned int stride, Scalar *coefficients) |
| | Applies a 2D discrete cosine transform for a given 2D data block that might be larger than the actual DCT data block.
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| static void | iTransform2 (const Scalar *coefficients, const unsigned int xElements, const unsigned int yElements, Scalar *data) |
| | Applies a inverse 2D discrete cosine transform for a given set of DCT coefficients.
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| static void | iTransform2 (const Scalar *coefficients, const unsigned int xElements, const unsigned int yElements, const unsigned int stride, Scalar *data) |
| | Applies a inverse 2D discrete cosine transform for a given set of DCT coefficients.
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This class implements discrete cosine transform functions.
◆ iTransform2() [1/2]
| static void Ocean::DiscreteCosineTransform::iTransform2 |
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const Scalar * |
coefficients, |
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const unsigned int |
xElements, |
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const unsigned int |
yElements, |
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const unsigned int |
stride, |
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Scalar * |
data |
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) |
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static |
Applies a inverse 2D discrete cosine transform for a given set of DCT coefficients.
- Parameters
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| coefficients | DCT coefficients from that the data information will be recovered |
| xElements | Number of horizontal data elements, with range [1, infinity) |
| yElements | Number of vertical data elements, with range [1, infinity) |
| stride | Width of the data information including the xElements, with range [xElements, infinity) |
| data | Resulting data block, a data block that might be larger than the actual number of DCT coefficients as an explicit stride parameter can be defined |
◆ iTransform2() [2/2]
| void Ocean::DiscreteCosineTransform::iTransform2 |
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const Scalar * |
coefficients, |
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const unsigned int |
xElements, |
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const unsigned int |
yElements, |
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Scalar * |
data |
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) |
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inlinestatic |
Applies a inverse 2D discrete cosine transform for a given set of DCT coefficients.
- Parameters
-
| coefficients | DCT coefficients from that the data information will be recovered |
| xElements | Number of horizontal data elements, with range [1, infinity) |
| yElements | Number of vertical data elements, with range [1, infinity) |
| data | Resulting data block, an array with xElements * yElements values must be provided |
◆ transform2() [1/2]
| static void Ocean::DiscreteCosineTransform::transform2 |
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const Scalar * |
data, |
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const unsigned int |
xElements, |
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const unsigned int |
yElements, |
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const unsigned int |
stride, |
|
|
Scalar * |
coefficients |
|
) |
| |
|
static |
Applies a 2D discrete cosine transform for a given 2D data block that might be larger than the actual DCT data block.
The resulting coefficients are stored in an row aligned order.
- Parameters
-
| data | Data block for that the transform is applied (pointer to the first element) |
| xElements | Number of horizontal data elements, with range [1, infinity) |
| yElements | Number of vertical data elements, with range [1, infinity) |
| stride | Width of the entire data information including the xElements, with range [xElements, infinity) |
| coefficients | Resulting number of coefficients, an array with xElements * yElements values must be provided |
◆ transform2() [2/2]
| void Ocean::DiscreteCosineTransform::transform2 |
( |
const Scalar * |
data, |
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|
const unsigned int |
xElements, |
|
|
const unsigned int |
yElements, |
|
|
Scalar * |
coefficients |
|
) |
| |
|
inlinestatic |
Applies a 2D discrete cosine transform for a given 2D data block.
The resulting coefficients are stored in an row aligned order.
- Parameters
-
| data | Data block for that the transform is applied |
| xElements | Number of horizontal data elements, with range [1, infinity) |
| yElements | Number of vertical data elements, with range [1, infinity) |
| coefficients | Resulting number of coefficients, an array with xElements * yElements values must be provided |
The documentation for this class was generated from the following file:
1.9.8