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Mv series camera appnotes 4 rpi (view source)
Revision as of 12:23, 17 July 2024
, 12:23, 17 July 2024→Packed image format
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Since the memory requested by Raspberry Pi for the image, the width is 32-align and the height is 16-align, the 3088*2064 image will be saved as 3104*2064 size.
Since the memory requested by Raspberry Pi for the image, the width is 32-align and the height is 16-align, the 3088*2064 image will be saved as 3104*2064 size.
+
+==== Explanation from the Raspberry Pi official document ====
+
+===== Packed format details =====
+The packed format uses less storage for pixel data.
+
+''On Raspberry Pi 4 and earlier devices'', the packed format packs pixels using the MIPI CSI-2 standard. This means:
+
+* 10-bit camera modes pack 4 pixels into 5 bytes. The first 4 bytes contain the 8 most significant bits (MSBs) of each pixel, and the final byte contains the 4 pairs of least significant bits (LSBs).
+* 12-bit camera modes pack 2 pixels into 3 bytes. The first 2 bytes contain the 8 most significant bits (MSBs) of each pixel, and the final byte contains the 4 least significant bits (LSBs) of both pixels.
+
+''On Raspberry Pi 5 and later devices'', the packed format compresses pixel values with a visually lossless compression scheme into 8 bits (1 byte) per pixel.
+
+===== Unpacked format details =====
+The unpacked format provides pixel values that are much easier to manually manipulate, at the expense of using more storage for pixel data.
+
+On all devices, the unpacked format uses 2 bytes per pixel.
+
+''On Raspberry Pi 4 and earlier devices'', applications apply zero padding at the '''most significant end'''. In the unpacked format, a pixel from a 10-bit camera mode cannot exceed the value 1023.
+
+''On Raspberry Pi 5 and later devices'', applications apply zero padding at the '''least significant end''', so images use the full 16-bit dynamic range of the pixel depth delivered by the sensor.
+
===i2c script for parameter configuration===
===i2c script for parameter configuration===
We provide shell scripts to configure the parameters.
We provide shell scripts to configure the parameters.