AndreyFilippov committed changes to the Elphel git project :
merged with framepars

AndreyFilippov committed changes to the Elphel git project :
updated settings

AndreyFilippov committed changes to the Elphel git project :
updated settings

ERS and GRR in MT9P001 on 10393:

← Older revision Revision as of 00:50, 4 October 2016 (6 intermediate revisions not shown)Line 21: Line 21: Some CMOS sensors have "global shutter" function mentioned in the specs but it is usually far from the real snapshot ones (as in the modern CCD-based camcorders). Such mode has simultaneous erase of all pixels, but the end of exposure is still determined by the it readout, so exposure time for each pixel will be different - pixels in the bottom of the frame will be exposed longer by the exposure time. Such mode is useful with the flash lamp, when it is triggered after all the pixels are erased but before the readout starts, but usually quite useless without such lamp (or external shutter of some kind - i.e. mechanical or LCD). Some CMOS sensors have "global shutter" function mentioned in the specs but it is usually far from the real snapshot ones (as in the modern CCD-based camcorders). Such mode has simultaneous erase of all pixels, but the end of exposure is still determined by the it readout, so exposure time for each pixel will be different - pixels in the bottom of the frame will be exposed longer by the exposure time. Such mode is useful with the flash lamp, when it is triggered after all the pixels are erased but before the readout starts, but usually quite useless without such lamp (or external shutter of some kind - i.e. mechanical or LCD). -==ERS and "global" modes in MT9P001 on 10393==+==ERS and GRR in MT9P001 on 10393== -[[File:Ers ch0 exp-4ms delay-30ms LED-10us.jpeg|400px|thumb|Fig.1 ERS Mode + external LED flash: flash duration = 10us, exposure = 4ms, external signal delay = 30ms]]+[[File:Ers ch0 exp-4ms delay-30ms LED-10us.jpeg|400px|thumb|Fig.1 ERS + external LED flash: flash duration = 10us, exposure = 4ms, external signal delay (LED flash) = 30ms]] -[[File:Global ch0 exp-1line delay-10ms LED-10us.jpeg|400px|thumb|Fig.2 Global Mode + external LED flash: flash duration = 10us, exposure = 1 line, external signal delay = 10ms]]+[[File:Global ch0 exp-1line delay-10ms LED-10us.jpeg|400px|thumb|Fig.2 Global reset release shutter + external LED flash: flash duration = 10us, exposure = 1 line, external signal delay (LED flash) = 10ms]]  +   +===Setup a flash using the programmable output trigger signal for rolling and global reset release shutters===  +   +====Electronic Rolling Shutter====  +{|  +|[[File:Ers ch0 exp-4ms delay-30ms LED-10us pars.jpeg|600px|thumb|Fig.3 Parameters, TRIG[4]==0 ]]  +|}  +Example steps:  + 1. TRIG_PERIOD=25000000 (decimal,10FPS)  +    TRIG_DELAY=3000000 (for port 0 = output sync signal delay after the 1st line exposure start, for ports 1..3 - a delay from the port 0 1st line exposure start to other port's 1st line exposure)  +    EXTERN_TIMESTAMP=0x0 (not using external timestamp)  +    TRIG_BITLENGTH=0xff (max output signal width is 10us)  +    TRIG_CONDITION=0x0 (internal source for trigger)  +    <b>TRIG_OUT=0x66555</b> (enables output trigger signal)  +  + 2. TRIG=0x4  + 3. Change any parameters from 1.  +   +====Global Reset Release shutter====  +{|  +|[[File:Global ch0 exp-1line delay-10ms LED-10us pars.jpeg|600px|thumb|Fig.4 Parameters, TRIG[4]==1]]  +|}  +Example steps:  + 1. TRIG_PERIOD=25000000 (decimal,10FPS)  +    TRIG_DELAY=1000000 (for port 0 = output sync signal delay after the 1st line exposure start, for ports 1..3 - a delay from the port 0 1st line exposure start to other port's 1st line exposure)  +    EXTERN_TIMESTAMP=0x0 (not using external timestamp)  +    TRIG_BITLENGTH=0xff (max output signal width is 10us)  +    TRIG_CONDITION=0x0 (internal source for trigger)  +    TRIG_OUT=0x66555  +  + 2. TRIG=0x14  + 3. Change any parameters from 1. Oleg

uploaded "[[File:Global ch0 exp-1line delay-10ms LED-10us pars.jpeg]]"

Oleg

ERS,"global" in MT9P001 on 10393:

← Older revision Revision as of 23:35, 3 October 2016 (One intermediate revision not shown)Line 20: Line 20: == ERS-built CMOS sensors with "global" shutter == == ERS-built CMOS sensors with "global" shutter == Some CMOS sensors have "global shutter" function mentioned in the specs but it is usually far from the real snapshot ones (as in the modern CCD-based camcorders). Such mode has simultaneous erase of all pixels, but the end of exposure is still determined by the it readout, so exposure time for each pixel will be different - pixels in the bottom of the frame will be exposed longer by the exposure time. Such mode is useful with the flash lamp, when it is triggered after all the pixels are erased but before the readout starts, but usually quite useless without such lamp (or external shutter of some kind - i.e. mechanical or LCD). Some CMOS sensors have "global shutter" function mentioned in the specs but it is usually far from the real snapshot ones (as in the modern CCD-based camcorders). Such mode has simultaneous erase of all pixels, but the end of exposure is still determined by the it readout, so exposure time for each pixel will be different - pixels in the bottom of the frame will be exposed longer by the exposure time. Such mode is useful with the flash lamp, when it is triggered after all the pixels are erased but before the readout starts, but usually quite useless without such lamp (or external shutter of some kind - i.e. mechanical or LCD).  +  +==ERS and "global" modes in MT9P001 on 10393==  +[[File:Ers ch0 exp-4ms delay-30ms LED-10us.jpeg|400px|thumb|Fig.1 ERS Mode + external LED flash: flash duration = 10us, exposure = 4ms, external signal delay = 30ms]]  +[[File:Global ch0 exp-1line delay-10ms LED-10us.jpeg|400px|thumb|Fig.2 Global Mode + external LED flash: flash duration = 10us, exposure = 1 line, external signal delay = 10ms]] Oleg

uploaded "[[File:Global ch0 exp-1line delay-10ms LED-10us.jpeg]]"

Oleg

Andrey Filippov committed changes to the Elphel git project :
removed binary program

Andrey Filippov committed changes to the Elphel git project :
removed binary program

Oleg Dzhimiev committed changes to the Elphel git project :
mariadb faster mirror

Oleg Dzhimiev committed changes to the Elphel git project :
mariadb faster mirror

Required packages:

← Older revision Revision as of 19:11, 3 October 2016 Line 15: Line 15: Ubuntu and Debian Ubuntu and Debian   sudo apt-get install gawk wget git-core diffstat unzip texinfo gcc-multilib \   sudo apt-get install gawk wget git-core diffstat unzip texinfo gcc-multilib \ -  build-essential chrpath socat libsdl1.2-dev xterm+  build-essential chrpath socat libsdl1.2-dev xterm device-tree-compiler Fedora Fedora Line 21: Line 21:   diffutils diffstat git cpp gcc gcc-c++ glibc-devel texinfo chrpath \   diffutils diffstat git cpp gcc gcc-c++ glibc-devel texinfo chrpath \   ccache perl-Data-Dumper perl-Text-ParseWords perl-Thread-Queue socat \   ccache perl-Data-Dumper perl-Text-ParseWords perl-Thread-Queue socat \ -  findutils which SDL-devel xterm +  findutils which SDL-devel xterm device-tree-compiler OpenSUSE OpenSUSE   sudo zypper install python gcc gcc-c++ git chrpath make wget python-xml \   sudo zypper install python gcc gcc-c++ git chrpath make wget python-xml \ -  diffstat makeinfo python-curses patch socat libSDL-devel xterm                       +  diffstat makeinfo python-curses patch socat libSDL-devel xterm device-tree-compiler                      CentOS CentOS   sudo yum install gawk make wget tar bzip2 gzip python unzip perl patch \   sudo yum install gawk make wget tar bzip2 gzip python unzip perl patch \   diffutils diffstat git cpp gcc gcc-c++ glibc-devel texinfo chrpath socat \   diffutils diffstat git cpp gcc gcc-c++ glibc-devel texinfo chrpath socat \ -  perl-Data-Dumper perl-Text-ParseWords perl-Thread-Queue SDL-devel xterm+  perl-Data-Dumper perl-Text-ParseWords perl-Thread-Queue SDL-devel xterm device-tree-compiler </font> </font> -  ==<font color="blue">Other dependencies</font>== ==<font color="blue">Other dependencies</font>== Oleg

On October 8th, 2016 Andrey will be presenting his work on VDT – Free Software Environment for FPGA Development at an open source digital design conference, ORCONF 2016. ORCONF 2016

The conference will take place in Bologna, Italy, and we are glad for the possibility to meet some of European users of Elphel cameras, and to connect with the community of developers excited about open source design, free software and open hardware.

Elphel will be present at the conference by Andrey Filippov from USA headquarters and Alexadre Poltorak, founder of Swiss 3D4Pi mobile mapping company, working closely with Elphel to integrate Eyesis4Pi, stereophotogrammetric camera, for the purpose of image based 3D reconstruction applications. Andrey will bring and demonstrate the new multisensor NC393 H-camera and Alexandre plans to take some panoramic footage with Eyesis4Pi camera, while in Bologna.

2016/09/13 UofU Computer Engineering Jr Seminar:

← Older revision Revision as of 20:25, 30 September 2016 (One intermediate revision not shown)Line 1: Line 1: ==Presentations== ==Presentations==  +  +===2016/09/13 UofU Computer Engineering Jr Seminar===  +* Presentation:  +**[http://community.elphel.com/files/presentations/UUCompEngineerJrSeminar2016/UU_CompEngineerJrSeminar2016.odp High Performance Open Hardware Cameras] (52 MB) ===2014/04/14  UNIGE University of Geneva === ===2014/04/14  UNIGE University of Geneva === Olga

← Older revision Revision as of 16:17, 30 September 2016 (One intermediate revision not shown)Line 89: Line 89: === 0353-98-17 - Screw, M2.5, Socket Cap,  l=30mm, Black Oxide === === 0353-98-17 - Screw, M2.5, Socket Cap,  l=30mm, Black Oxide === mcmaster p/n 91290A059 mcmaster p/n 91290A059  +----  +  +=== 0353-98-21 - Screw, M2.5, Flat-Head Socket Cap, l=4mm, Stainless Steel ===  +mcmaster p/n 92125A082  +----  +  +=== 0353-97-22 - Screw, M2.5, Socket Cap, l=3mm, Stainless Steel ===  +mcmaster p/n 91292A035 ---- ---- === 0353-98-18 - M2.5x6mmx3.5mm Female Thread Brass Knurled Insert Embedded Nuts 30pcs  === === 0353-98-18 - M2.5x6mmx3.5mm Female Thread Brass Knurled Insert Embedded Nuts 30pcs  === ---- ---- Oleg

0353-97-50 - Screw, M6, Socket Cap, l=16mm:

← Older revision Revision as of 16:07, 30 September 2016 Line 219: Line 219: McMaster p/n 91292A135 McMaster p/n 91292A135 {{Cad4|0353-97-50}} {{Cad4|0353-97-50}}  +  +----  +  +=== 0353-97-51 - Screw, M6, Socket Cap, l=12mm ===  +18-8 Stainless Steel  +McMaster p/n 91292A134 ---- ---- Oleg

AndreyFilippov committed changes to the Elphel git project :
merged with framepars

AndreyFilippov committed changes to the Elphel git project :
merged with framepars

AndreyFilippov committed changes to the Elphel git project :
ignored image link

AndreyFilippov committed changes to the Elphel git project :
ignored image link