Working with raw image data - Revision history

Oleg: /* Capturing and downloading */

2018-01-19T01:27:30Z

Capturing and downloading

← Older revision		Revision as of 01:27, 19 January 2018
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	<font size='2em'>http://192.168.0.9/raw.php?cmd=run&ports=0x2</font>		<font size='2em'>http://192.168.0.9/raw.php?cmd=run&ports=0x2</font>
	* description:		* description:
	<font size='2em'>'''help:'''		<font size='2em'>'''<font color='darkblue'>help:</font>'''
	1. without parameters will print help		1. without parameters will print help
	'''capture request:'''		'''<font color='darkblue'>capture request:</font>'''
	2. decodes requested ports		2. decodes requested ports
	3. reads current frame_number		3. reads current frame_number
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	Image numbers might not match - this depends on fps.		Image numbers might not match - this depends on fps.
	6. prints debug info and links to download raw images		6. prints debug info and links to download raw images
	'''download request:'''		'''<font color='darkblue'>download request:</font>'''
	7. decodes raw info from sysfs and calculates the number of bytes needed to be read		7. decodes raw info from sysfs and calculates the number of bytes needed to be read
	There is '''fullwidth''','''width''' and '''height''' - the raw image size is '''fullwidth x height x bytes_per_pixel/8''',		There is '''fullwidth''','''width''' and '''height''' - the raw image size is '''fullwidth x height x bytes_per_pixel/8''',

2018-01-19T01:25:58Z

Capturing and downloading

← Older revision		Revision as of 01:25, 19 January 2018
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	<font size='2em'>http://192.168.0.9/raw.php?cmd=run&ports=0x2</font>		<font size='2em'>http://192.168.0.9/raw.php?cmd=run&ports=0x2</font>
	* description:		* description:
	<font size='2em'>		<font size='2em'>'''help:'''
	'''help:'''
	1. without parameters will print help		1. without parameters will print help
	'''capture request:'''		'''capture request:'''
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	'''download request:'''		'''download request:'''
	7. decodes raw info from sysfs and calculates the number of bytes needed to be read		7. decodes raw info from sysfs and calculates the number of bytes needed to be read
	There is '''fullwidth''','''width''' and '''height''' - the raw image size is '''fullwidth x height''',		There is '''fullwidth''','''width''' and '''height''' - the raw image size is '''fullwidth x height x bytes_per_pixel/8''',
	'''fullwidth''' is the '''width''' upped to the whole number of 128-bit bursts. And so		'''fullwidth''' is the '''width''' upped to the whole number of 128-bit bursts.
	the '''width''' is the number of valid pixels.		And so the '''width''' is the number of valid pixels.
	8. sets http response headers		8. sets http response headers
	9. outputs pixel data</font>		9. outputs pixel data</font>

2018-01-19T01:24:26Z

← Older revision		Revision as of 01:24, 19 January 2018
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	* description:		* description:
	<font size='2em'>		<font size='2em'>
			'''help:'''
	1. without parameters will print help		1. without parameters will print help
	capture request:		'''capture request:'''
	2. decodes requested ports		2. decodes requested ports
	3. reads current frame_number		3. reads current frame_number
Line 16:		Line 17:
	Image numbers might not match - this depends on fps.		Image numbers might not match - this depends on fps.
	6. prints debug info and links to download raw images		6. prints debug info and links to download raw images
	download request:		'''download request:'''
	7. decodes raw info from sysfs and calculates the ~~total~~ number of bytes needed to be read		7. decodes raw info from sysfs and calculates the number of bytes needed to be read
			There is '''fullwidth''','''width''' and '''height''' - the raw image size is '''fullwidth x height''',
			'''fullwidth''' is the '''width''' upped to the whole number of 128-bit bursts. And so
			the '''width''' is the number of valid pixels.
	8. sets http response headers		8. sets http response headers
	9. outputs pixel data</font>		9. outputs pixel data</font>

2018-01-19T01:16:16Z

@@ Line 1: / Line 1: @@
 ==<font color='darkblue'>Capturing and downloading</font>==
-===Command line, demo script: raw.py ===
+===raw.php (demo)===
 * run:
   <font size='2em'>'''root@elphel393:~# raw.py'''</font>
@@ Line 8: / Line 29: @@
 . formats system memory buffers and mmaps to user memory (all available ports)
 . selects position in video memory (0 or 1)
-. triggers copying pixel data from video memory to system memory for the frame_number+1 (waiting is implemented in the videomem driver)
+. triggers copying pixel data from video memory to system memory for the frame_number+1 (waiting is implemented in the videomem driver).
 . prints the first 16 bytes of the image
 . prints raw image info for each port</font>

2018-01-19T01:02:04Z

Downloading

@@ Line 1: / Line 1: @@
-==<font color='darkblue'>Downloading</font>==
+==<font color='darkblue'>Capturing and downloading</font>==
 * Available options (channels can be 0..3):
   <font size='2em'># set receiving buffer size in 4kB pages (thus 4096 equals to 16MB)
@@ Line 19: / Line 32: @@
   '''echo 0 > /sys/devices/soc0/elphel393-videomem\@0/membridge_start2'''
   '''cat /dev/image_raw2 > /tmp/test.raw'''</font>
 ==<font color='darkblue'>Displaying</font>==

2018-01-18T18:10:28Z

Python

2018-01-18T18:09:46Z

Python

@@ Line 39: / Line 39: @@
 ===Python===
 * Camera settings: 2592x1936 JPEG:
   <font size='2em'>''#!/usr/bin/python3''
   from PIL import Image

2018-01-13T00:30:25Z

Processing

← Older revision		Revision as of 00:30, 13 January 2018
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	==<font color='darkblue'>Processing</font>==		==<font color='darkblue'>Processing</font>==
	Open the file and process as pixel array RGGB, GRBG, GBRG or BGGR - 8 or 16 bits		Open the file and process as pixel array RGGB, GRBG, GBRG or BGGR - 8 or 16 bits

	[[Category:393]]		[[Category:393]]
	[[Category:raw image data]]		[[Category:raw image data]]
	[[Category:bayer pixel array]]		[[Category:bayer pixel array]]

2018-01-13T00:21:58Z

Displaying

← Older revision		Revision as of 00:21, 13 January 2018
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	The result will be a grayscale image.		The result will be a grayscale image.



	==<font color='darkblue'>Processing</font>==		==<font color='darkblue'>Processing</font>==

2018-01-12T19:36:50Z

Processing

← Older revision		Revision as of 19:36, 12 January 2018
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	==<font color='darkblue'>Processing</font>==		==<font color='darkblue'>Processing</font>==
	~~...~~		Open the file and process as pixel array RGGB, GRBG, GBRG or BGGR - 8 or 16 bits

	[[Category:393]]		[[Category:393]]
	[[Category:raw image data]]		[[Category:raw image data]]
	[[Category:bayer pixel array]]		[[Category:bayer pixel array]]