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Diffstat (limited to 'Documentation/camera-sensor-model.rst')
| -rw-r--r-- | Documentation/camera-sensor-model.rst | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/Documentation/camera-sensor-model.rst b/Documentation/camera-sensor-model.rst index 58bf70e1..b66c880a 100644 --- a/Documentation/camera-sensor-model.rst +++ b/Documentation/camera-sensor-model.rst @@ -105,35 +105,34 @@ control: will be downscaled in its vertical and horizontal sizes by the specified factor. - .. code-block:: + .. code-block:: c :caption: Definition: The horizontal and vertical binning factors horizontal_binning = xBin; vertical_binning = yBin; - - skipping Skipping reduces the image resolution by skipping the read-out of a number of adjacent pixels. The skipping factor is specified by the 'increment' number (number of pixels to 'skip') in the vertical and horizontal directions and for even and odd rows and columns. - .. code-block:: + .. code-block:: c :caption: Definition: The horizontal and vertical skipping factors - horizontal_skipping = (xOddInc + xEvenInc) / 2 - vertical_skipping = (yOddInc + yEvenInc) / 2 + horizontal_skipping = (xOddInc + xEvenInc) / 2; + vertical_skipping = (yOddInc + yEvenInc) / 2; Different sensors perform the binning and skipping stages in different orders. For the sake of computing the final output image size the order of execution is not relevant. The overall down-scaling factor is obtained by combining the binning and skipping factors. - .. code-block:: + .. code-block:: c :caption: Definition: The total scaling factor (binning + sub-sampling) - total_horizontal_downscale = horizontal_binning + horizontal_skipping - total_vertical_downscale = vertical_binning + vertical_skipping + total_horizontal_downscale = horizontal_binning + horizontal_skipping; + total_vertical_downscale = vertical_binning + vertical_skipping; 4. The output size is used to specify any additional cropping on the sub-sampled @@ -159,16 +158,16 @@ configurations: the *pixel rate* of the data sent on the MIPI CSI-2 bus allows to compute the image stream frame rate. The equation is the well known: - .. code-block:: + .. code-block:: c - frame_duration = total_frame_size / pixel_rate - frame_rate = 1 / frame_duration + frame_duration = total_frame_size / pixel_rate; + frame_rate = 1 / frame_duration; where the *pixel_rate* parameter is the result of the sensor's configuration of the MIPI CSI-2 bus *(the following formula applies to MIPI CSI-2 when used on MIPI D-PHY physical protocol layer only)* - .. code-block:: + .. code-block:: c - pixel_rate = CSI-2_link_freq * 2 * nr_of_lanes / bits_per_sample + pixel_rate = csi_2_link_freq * 2 * nr_of_lanes / bits_per_sample; |