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| 05:36 | Alpha | joined the channel |
| 05:36 | Alpha | Hi!
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| 05:41 | Alpha | Hi! I was interested in GSOC 2019, T763 opencine project. I had some trivial questions regarding the T872 C/C++ Challenge. I would be glad if somebody is willing to help me out.
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| 05:43 | Alpha | I opened the raw12 file in buffer (c++) and seperated the 4 channels then print it. It seems it print garbage value/unreadable characters.
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| 05:44 | Alpha | If I convert the characters to integer, it print values which are greater than 255. The values should be between 0-255 right?
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| 05:45 | Alpha | Maybe I didn't properly converted it into 8-bits.
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| 05:46 | Alpha | To get 8-bits from 12-bits of each channel, should I chop-off the 4 least significant bit or most significant bit?
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| 05:46 | Alpha | Thank you.
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| 07:13 | BAndiT1983|away | changed nick to: BAndiT1983
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| 07:14 | BAndiT1983 | hi rohan_ and Alpha, please take a look at the image in our wiki -> https://wiki.apertus.org/index.php/RAW12
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| 07:16 | BAndiT1983 | you have to split the sensel data, which is greater than 255 (8bit), as it is 12bit (4096), then you can convert it by removing LSB (least significant bits)
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| 07:17 | BAndiT1983 | also endianess is important, if the final data is garbage, then it's probably has to be swapped
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| 07:34 | alexML | you could also convert with a nonlinear curve - the end result will look nicer that way
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| 07:34 | alexML | (this could fit into "Additional points")
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| 07:57 | Bertl_zZ | changed nick to: Bertl
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| 07:57 | Bertl | morning folks!
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| 08:24 | Alpha | @BAndiT1983 and @alexML Thanks a lot.
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| 08:25 | Alpha | @Bertl Good morning.
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| 08:25 | Alpha | @alexML What do you mean by convert with a non-linear curve?
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| 08:27 | Alpha | @BAndiT1983 as for the endianess, should I swap each binary bits (reverse it) or only the MSB and LSB (where rest remain unchanged).
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| 08:27 | Alpha | Thank you.
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| 08:49 | Bertl | off for now ... bbl
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| 09:01 | rohan_ | @BAndiT1983 Thanks! Understood
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| 09:03 | rohan_ | @alexML Ya, I was thinking about the ways it could be scaled down, which would make the image more accurate.
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| 09:04 | rohan_ | Will try this approach too!
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| 09:58 | BAndiT1983 | Alpha, you have to rotate bytes of course, 16bit or 32bit have to be rotated accordingly, as they require different approaches
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| 10:09 | BAndiT1983 | https://i.stack.imgur.com/uB92m.png
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| 12:18 | supragya_vpn | hello BAndiT1983
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| 12:18 | supragya_vpn | I have seen quite a few students trying C++ challenge
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| 12:19 | supragya_vpn | :P
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| 12:22 | BAndiT1983 | hi supragya_vpn
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| 12:23 | BAndiT1983 | yep, will be a bigger job to check all the entries, if so many will be committed
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| 12:23 | supragya_vpn | there are already 5-8 students for frameserver
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| 12:23 | supragya_vpn | :P
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| 12:23 | BAndiT1983 | am currently at the hub ;) there are 3 of us working together on different topics
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| 12:23 | supragya_vpn | o.0
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| 12:28 | siddhantsahu | Hi supragya_vpn BAndiT1983
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| 12:29 | siddhantsahu | I am getting this issue of OpenCL when building the master branch of OpenCine
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| 12:32 | BAndiT1983 | hi siddhantsahu, if it's a bigger log, then please copy to pastebin
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| 12:36 | siddhantsahu | https://www.irccloud.com/pastebin/6WIJdbBa/
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| 12:38 | BAndiT1983 | you have to install OCL module for your system, which linux do you use?
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| 12:38 | siddhantsahu | I ran ./env_setup.sh and have all dependencies installed
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| 12:38 | BAndiT1983 | interesting, supragya_vpn your turn, as you have implemented this
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| 12:38 | siddhantsahu | Ubuntu 16.04 LTS
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| 12:38 | BAndiT1983 | ;)
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| 12:45 | supragya_vpn | hmm
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| 12:45 | supragya_vpn | its cmake error
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| 12:46 | supragya_vpn | the env_setup thingy is for insstalling deps
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| 12:46 | supragya_vpn | the cmake is called from a wrong pwd i guess
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| 12:47 | siddhantsahu | I called "cmake" from within the "build" directory
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| 12:48 | supragya_vpn | can you post your exact command?
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| 12:49 | siddhantsahu | cmake -DCMAKE_PREFIX_PATH=$HOME/Qt/5.12.1/gcc_64/lib/cmake/ ../
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| 12:49 | supragya_vpn | hmm weird
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| 12:49 | supragya_vpn | that should work
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| 12:50 | siddhantsahu | I also have OpenCL installed by running "sudo apt install ocl-icd-opencl-dev"
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| 12:51 | siddhantsahu | I can also locate the libOpenCL.so at /usr/lib/x86_64-linux-gnu/libOpenCL.so
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| 12:51 | supragya_vpn | what do you get if you ls ../
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| 12:53 | BAndiT1983 | you don't need this slash at the end
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| 12:53 | siddhantsahu | A "bin" directory and CmakeListCache and the MakeFile
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| 12:56 | supragya_vpn | idk if that is right
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| 12:56 | supragya_vpn | doesn't seem right
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| 12:57 | BAndiT1983 | remove slash
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| 12:57 | supragya_vpn | https://www.youtube.com/watch?time_continue=9&v=Rpq_ItPHFx8 in case you dont already know this
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| 12:58 | siddhantsahu | Yes I have watched this video and followed the instructions but still doesn't seem to build for me
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| 12:58 | siddhantsahu | Also tried to build using Qt, get the same CMake errors of OpenCL
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| 12:59 | supragya_vpn | hello rohan_
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| 12:59 | rohan_ | hi supragya_vpn
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| 12:59 | supragya_vpn | seems like very openCL related issue yes
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| 13:00 | siddhantsahu | This guy gets the same error as me https://www.bountysource.com/issues/49541024-links-to-target-opencl-opencl-but-the-target-was-not-found
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| 13:00 | siddhantsahu | Says to upgrade the CMake version
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| 13:01 | supragya_vpn | is clinfo returning garbage?
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| 13:01 | siddhantsahu | I am using CMake version 3.5.1
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| 13:01 | supragya_vpn | https://askubuntu.com/questions/850281/opencl-on-ubuntu-16-04-intel-sandy-bridge-cpu
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| 13:02 | supragya_vpn | oh so... that's distribution issue with u... not much help here unfortunately on that end
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| 13:02 | supragya_vpn | try a clean installation if you can
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| 13:03 | siddhantsahu | Yes OpenCL is configured properly on my machine
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| 13:03 | supragya_vpn | off for a meeting... bbl
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| 13:04 | rohan_ | I had a question:- the raw12 file at <http://files.apertus.org/AXIOM-Beta/snapshots/portraits/portrait-gainx2-offset2047-20ms-02.raw12> has a size of 1,88,74,624 bytes. But the file should have a size of 4096 x 3072 x 12 = 15,09,94,944 bits =1,88,74,368 bytes.
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| 13:05 | rohan_ | why is there a small excess of memory?
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| 13:05 | Bertl_oO | the register set is added at the end of the raw image (with the -r option)
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| 13:06 | Bertl_oO | this is 128 sensor registers with 16bit each
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| 13:07 | rohan_ | got it! Thanks Bertl_oO
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| 13:08 | Bertl_oO | you're welcome!
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| 14:51 | Dev | joined the channel |
| 14:53 | Dev | Hello all ! , i was also getting errors while rebuilding OC , but these are Cmake issues -> https://pastebin.com/K7gyQLQr
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| 14:55 | siddhantsahu | Dev: I think these are just warnings
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| 14:56 | siddhantsahu | Try running make -j4 after this it should work fine
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| 15:00 | Dev | okay let me see
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| 15:00 | Dev | thanks
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| 15:01 | Dev | last time i built OC , it was also giving opencl error ,
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| 15:01 | Dev | i remeber , i solved it with some commands
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| 15:01 | siddhantsahu | Dev: Even I am getting OpenCL error
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| 15:02 | siddhantsahu | This error in particular https://www.irccloud.com/pastebin/6WIJdbBa/
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| 15:04 | Dev | https://askubuntu.com/questions/850281/opencl-on-ubuntu-16-04-intel-sandy-bridge-cpu , have u tried basic installation command
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| 15:11 | Dev | Finally , built it , thanks sindhantsahu ,
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| 15:11 | siddhantsahu | Dev: Yes I ran the basic installation, still doesn't build for me.
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| 15:12 | Dev | They were just warning really :D
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| 15:12 | siddhantsahu | Great! It successfully build for you.
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| 15:12 | siddhantsahu | I am still getting those OpenCL errors.
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| 15:16 | Dev_ | I will tell u if I got something relevant , sindhantsahu
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| 15:16 | Dev_ | To opencl
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| 15:57 | Y_G | Hi,Regarding the C/C++ task for GSOC'19 ,to convert 12 bit pixels to 8 bit,can we just ignore the lsb's?
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| 16:05 | Y_G | sorry,Just read the logs now,Got the answer
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| 16:56 | BAndiT1983 | @all who tries to build OC, no problem to build it under ubuntu 18.10, installed QT, executed cmake command line from wiki (system-dependent adjustments applied)
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| 16:56 | BAndiT1983 | used Qt version 5.12.1
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| 16:57 | BAndiT1983 | only opencl-headers package was missing on the system to find cl/cl.hpp, other than that no further errors occurred
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| 16:58 | siddhantsahu | BAndiT1983: Yes I am getting this opencl headers missing error
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| 16:58 | siddhantsahu | How to fix it?
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| 16:58 | BAndiT1983 | install opencl-headers package
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| 16:59 | siddhantsahu | Ok let me try once again
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