158 lines
2.7 KiB
ReStructuredText
158 lines
2.7 KiB
ReStructuredText
.. -*- coding: utf-8; mode: rst -*-
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.. _packed-hsv:
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******************
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Packed HSV formats
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******************
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Description
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===========
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The *hue* (h) is measured in degrees, the equivalence between degrees and LSBs
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depends on the hsv-encoding used, see :ref:`colorspaces`.
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The *saturation* (s) and the *value* (v) are measured in percentage of the
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cylinder: 0 being the smallest value and 255 the maximum.
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The values are packed in 24 or 32 bit formats.
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.. raw:: latex
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\begingroup
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\tiny
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\setlength{\tabcolsep}{2pt}
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.. tabularcolumns:: |p{2.0cm}|p{0.54cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|
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.. _packed-hsv-formats:
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.. flat-table:: Packed HSV Image Formats
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:header-rows: 2
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:stub-columns: 0
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* - Identifier
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- Code
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-
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- :cspan:`7` Byte 0 in memory
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- :cspan:`7` Byte 1
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- :cspan:`7` Byte 2
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- :cspan:`7` Byte 3
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* -
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-
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- Bit
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- 7
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- 6
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- 5
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- 4
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- 3
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- 2
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- 1
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- 0
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- 7
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- 6
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- 5
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- 4
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- 3
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- 2
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- 1
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- 0
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- 7
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- 6
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- 5
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- 4
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- 3
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- 2
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- 1
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- 0
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- 7
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- 6
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- 5
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- 4
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- 3
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- 2
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- 1
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- 0
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* .. _V4L2-PIX-FMT-HSV32:
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- ``V4L2_PIX_FMT_HSV32``
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- 'HSV4'
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-
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-
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-
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-
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-
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-
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-
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-
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-
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- h\ :sub:`7`
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- h\ :sub:`6`
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- h\ :sub:`5`
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- h\ :sub:`4`
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- h\ :sub:`3`
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- h\ :sub:`2`
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- h\ :sub:`1`
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- h\ :sub:`0`
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- s\ :sub:`7`
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- s\ :sub:`6`
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- s\ :sub:`5`
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- s\ :sub:`4`
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- s\ :sub:`3`
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- s\ :sub:`2`
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- s\ :sub:`1`
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- s\ :sub:`0`
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- v\ :sub:`7`
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- v\ :sub:`6`
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- v\ :sub:`5`
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- v\ :sub:`4`
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- v\ :sub:`3`
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- v\ :sub:`2`
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- v\ :sub:`1`
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- v\ :sub:`0`
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* .. _V4L2-PIX-FMT-HSV24:
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- ``V4L2_PIX_FMT_HSV24``
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- 'HSV3'
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-
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- h\ :sub:`7`
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- h\ :sub:`6`
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- h\ :sub:`5`
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- h\ :sub:`4`
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- h\ :sub:`3`
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- h\ :sub:`2`
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- h\ :sub:`1`
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- h\ :sub:`0`
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- s\ :sub:`7`
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- s\ :sub:`6`
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- s\ :sub:`5`
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- s\ :sub:`4`
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- s\ :sub:`3`
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- s\ :sub:`2`
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- s\ :sub:`1`
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- s\ :sub:`0`
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- v\ :sub:`7`
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- v\ :sub:`6`
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- v\ :sub:`5`
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- v\ :sub:`4`
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- v\ :sub:`3`
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- v\ :sub:`2`
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- v\ :sub:`1`
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- v\ :sub:`0`
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-
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.. raw:: latex
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\endgroup
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Bit 7 is the most significant bit.
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