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Mv series camera appnotes 4 rpi (view source)
Revision as of 16:31, 16 May 2022
, 16:31, 16 May 2022no edit summary
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==== Tightly aligned image format ====
−The data format saved by mv_raspicam is the data format on the MIPS bus, with no empty bit padding between pixels.
−[[File:Packed raw data layer.png|center|thumb|1200x1200px|Packed raw data layer]]
−<br />
−==== Image size ====
−Buffersize= ALIGN_UP（width*bit_depth/8,32）*ALIGN_UP(height,16)
−The row buffer size should be 32 bytes aligned; the column buffer size should be 16 bytes aligned.
−For example, the image size of 3088*2064@8bit is 6406656; the image size of 3088*2064@10bit is 7991808; the image size of 3088*2064@12bit is 9576960.
−PS. This y8 file can be used with this player: [https://yuv-player-deluxe.software.informer.com/2.6/ YUV Displayer Deluxe].
−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.
Several files will be saved in the /dev/shm/ directory after completion.
Several files will be saved in the /dev/shm/ directory after completion.
−==== Trigger mode ====
==== Trigger mode ====
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Note: script [https://github.com/veyeimaging/mvcam_raspberrypi/tree/main/mv_tools_rpi link].
Note: script [https://github.com/veyeimaging/mvcam_raspberrypi/tree/main/mv_tools_rpi link].
+
+==== Raw data picture format ====
+
+==== Unpacked image format(padded) ====
+For 10bit depth and 12bit depth pixel data, two bytes are always used to store one pixel. The V4L2 standard 'Y10 ', 'Y12 ' formats are stored in this way.
+
+This storage method is convenient for software processing, but has the disadvantage of taking up more space.
+
+==== Packed image format ====
+The data format saved by mv_raspicam is the data format on the MIPS bus, with no empty bit padding between pixels.
+[[File:Packed raw data layer.png|center|thumb|1200x1200px|Packed raw data layer]]
+<br />
+
+==== Packed image size ====
+Buffersize= ALIGN_UP（width*bit_depth/8,32）*ALIGN_UP(height,16)
+
+The row buffer size should be 32 bytes aligned; the column buffer size should be 16 bytes aligned.
+
+For example, the image size of 3088*2064@8bit is 6406656; the image size of 3088*2064@10bit is 7991808; the image size of 3088*2064@12bit is 9576960.
+
+==== Format convert tool ====
+We have written a small tool: [https://github.com/veyeimaging/pixel_layer_convert pixel_layer_convert], which can easily convert packed images to unpacked images.
+
+For example, the following command converts a packed raw10 image of 3088 width to an unpacked raw10.
+
+<code>. /pixel_layer_convert -I Y10P -i y10-3088x2064_0001.raw -o y10-3088x2064_0001_new.raw -w 3088</code>
+
+==== Raw data image player ====
+We recommend using [https://www.offminor.de/ vooya] as the player, which supports GREY, and unpacked image formats.
+
+Also, y8 file can be used with this player: [https://yuv-player-deluxe.software.informer.com/2.6/ YUV Displayer Deluxe].
+
+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.
===Shell script for parameter configuration===
===Shell script for parameter configuration===
We provide shell scripts to configure the parameters.
We provide shell scripts to configure the parameters.