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| 10:06 | Bertl | morning folks!
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| 10:37 | Bertl | off for now ... bbl
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| 11:41 | Bertl | back ...
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| 13:25 | Ashu | hi Bertl !!
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| 13:26 | Bertl | hey! how's it going?
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| 13:26 | Ashu | I read in lab T931,It is planned that data-points for histogram are planned to be send to web client as JSON data. Would we be using some code to parse overlay data(data-points) to json data for sending to web client?
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| 13:27 | Ashu | everthing is fine :)
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| 13:28 | Ashu | https://lab.apertus.org/T931
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| 13:28 | Bertl | no, the idea is to calculate the data from the image stored in DDR memory (as fast and as efficient as possible)
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| 13:28 | Ashu | if this is right,then I think we can use d3 library to do this.
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| 13:28 | Ashu | I have tried to make example to use d3 library to render histogram for 5-bitdepth rawfile for which I am sending json data .
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| 13:28 | Bertl | and the either generate an overlay from this data or alternatively send the data to a web client
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| 13:29 | Bertl | where it is processed and visualized on the client side
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| 13:32 | Ashu | no, the idea is to calculate the data from the image stored in DDR memory (as fast and as efficient as possible): yes the calculation part is done there only but after that data must be send to client which can be done as json
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| 13:33 | Bertl | json as data transport is fine, yes
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| 13:33 | Ashu | https://github.com/ASHOK17198/Render-SVG-Histogram/blob/master/index.html
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| 13:33 | Bertl | the important part is to get all the calculations and visualization (drawing) done by the client and not by the camera
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| 13:36 | Ashu | yes I understand that and I have done this in the example.
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| 13:37 | Ashu | after getting data in client as jason I am rendering it in browser as SVG.
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| 13:37 | Ashu | *JSON
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| 13:42 | Bertl | excellent
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| 13:51 | Ashu | So, can we proceed with this approach for visualisation for tools
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| 13:51 | Ashu | ?
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| 13:52 | Bertl | sounds good to me, but I can't test it ATM ... check with BAndiT1983|away when he's around
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| 13:54 | Ashu | okay I will be checking logs . Thanku :)
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| 13:56 | Bertl | no problem!
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| 16:01 | vup2 | Will transferring the raw data and calculating the histogram completely on the client side be actually fast enough?
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| 16:02 | Bertl | not the raw data :)
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| 16:02 | vup2 | But is that not what Ashu is suggesting?
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| 16:03 | vup2 | (Atleast thats what is done by the file he linked)
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| 16:03 | Bertl | well, that's why I tried to explain the process: userspace tools collect 'data' about the image, e.g. the histogram buckets
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| 16:04 | Bertl | then this data is either used to render the overlay or is sent to a web client which then processes the data and draws the histogram
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| 16:05 | Bertl | the file he linked does draw histogram bars based on data
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| 16:05 | Bertl | (at least as far as I can tell)
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| 16:06 | Bertl | I've no idea where the data comes from or how it is generated
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| 16:09 | vup2 | Yeah, ok he calculates the histogram buckets here https://github.com/ASHOK17198/Render-SVG-Histogram/blob/ed7ef697fa2b0898b9d41fa16164d431f78f3ca4/index.html#L81
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| 16:09 | vup2 | In the webclient itself
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| 16:10 | Bertl | well, it is an example, no?
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| 16:13 | vup2 | Yeah but it sounded like they he wanted to do it the same way for the actual histogram
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| 16:16 | Ashu | Bertl: I've no idea where the data comes from or how it is generated : I have taken values of bucket which were calculated in challenge task T1140.
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| 16:17 | Bertl | as I said, the visualization per-se looks fine to me, i.e. that's the way to go
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| 16:17 | Bertl | the data, e.g. the bucket counts, need to be calculated like in the challenge task
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| 16:18 | Ashu | vup2: Will transferring the raw data and calculating the histogram completely on the client side be actually fast enough? : I am not suggesting to transfer whole raw data, I am suggesting to send only the calculated bucket values by hist.c
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| 16:18 | Bertl | and then can be either packaged in the generated html or sent via a side channel to the client code
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| 16:18 | vup2 | Ah, sorry for the misunderstanding
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| 16:20 | Ashu | the data I have written inside json is hardcoded by me using the output I recieved from challenge task .
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