| | <<<Back 1 day (to 2015/03/02) | 20150303 |
| Robin_Watts | evening kens. | 00:41.20 |
| | mvrhel was leaving his place at 7pm (my time). If he flew at 9... should be landing 12ish. So anytime... | 00:43.05 |
| henrys | Robin_Watts: south park's parody on game of thrones is hilarious | 01:03.44 |
| Robin_Watts | henrys: I'm sure. I'll have to watch for that one. | 01:04.47 |
| | How many times will I need to recompile before this value actually gets set? 4 times so far... sigh... | 01:05.36 |
| | will try again tomorrow :( | 01:06.24 |
| tor5 | evening rayjj | 01:57.33 |
| kens | i was ray on the phone :-) | 01:57.43 |
| | *it | 01:57.49 |
| tor5 | kens: ah! | 01:57.50 |
| | so what have you decided about tomorrow morning? | 01:58.05 |
| kens | nothing yet | 01:58.11 |
| | ray was expecting Micahel to be here already | 01:58.23 |
| | so I was going to sit heres and discuss it thene until he arri | 01:58.38 |
| | grr stupid trackpad mangling text | 01:58.55 |
| tor5 | isn't there an option to turn off the trackpad while typing? | 01:59.36 |
| kens | I haven't found one.... | 01:59.45 |
| tor5 | I know there is on Linux, because I need it :) | 01:59.48 |
| kens | and tis pad is too sensitive, the insertion point jumps around when my palm comes near it | 02:00.15 |
| tor5 | look for a synaptics control panel thingy, if that's what you've got | 02:03.03 |
| kens | could be, I'm in control panel, rummaging | 02:03.22 |
| tor5 | on some trackpads, there's a control panel to tweak all kinds of things. on others... no such luck :( | 02:03.42 |
| kens | seems to come up as a mouse | 02:04.50 |
| | sono fiddling options | 02:05.30 |
| rayjj | kens: I found that mvrhel was talking about his flights on http://ghostscript.com/irclogs/2015/01/14.html and he mentioned getting the one that gets in at 7:10pm | 02:07.00 |
| | kens: I don't see any other discussion on IRC | 02:07.19 |
| kens | Well that sounds about right | 02:07.52 |
| rayjj | hi, tor5 | 02:07.56 |
| kens | so by the time he clears baggae and stuff, picks up van etc, it will probably be around 9pm before he gets here | 02:08.30 |
| | unless rental is quicker here than my usual experience | 02:08.54 |
| rayjj | I didn't have lunch, and am getting peckish, so I'm going to head across the parking lot for some vittles. If you here from mvrhel, please have him call me | 02:12.11 |
| kens | will do | 02:12.53 |
| tor5 | kens: send me an email with what you decide and I'll read it when I wake up... having a difficult time staying awake now. | 03:20.12 |
| kens | me too, but ok, goodnigth tor | 03:23.38 |
| tor5 | good night. if nothing else I'll just assume breakfast at 8.30 though I'll likely be up before then. | 03:24.40 |
| rayjj | kens: what time do you want to get up? | 03:51.46 |
| | I saw 8:30, but that's pretty late | 03:52.01 |
| | I'm usually up at 5:30AM PST (6:30 AM here) | 03:52.43 |
| | mvrhel and I just got back with the van | 03:53.03 |
| kens | rayjj I'm good with pretty much any time | 03:54.30 |
| | jet lag will wake me up..... | 03:54.47 |
| | glad to hear Michael made it though ;-) | 03:55.10 |
| | Shall we say breakfast at 6:30 am ? | 03:55.57 |
| rayjj | That sounds good to me. I'll confirm with mvrhel (I'm going to keep him company at dinner) | 03:56.31 |
| kens | OK drop me something in irc if you want a different time, I'm going to bed now. Have a good dinner | 03:57.13 |
| rayjj | kens: see you then. Have a good sleep. | 03:57.42 |
| kens | :-) goodnight! | 03:58.04 |
| Guest56445 | I am trying to offload some of the rendering task to GPU using OpenGL, but with which I am not able to get visually similar output w.r.t. ghostscript code. | 05:28.51 |
| | My initial investigation shows that it could be the different interpolation algorithms by openGL and reference gs. OpenGL has 2 options nearest neighbor and linear interpolation. | 05:29.59 |
| | May I know what algorithm is used by GS? | 05:30.25 |
| | *for interpolation | 05:37.08 |
| chrisl | Guest56445: I believe GS uses a mitchell filter for interpolation.... see gxiscale.c and siinterp.c in the "base" directory | 07:59.22 |
| | *disclaimer*: it's not my area of "interest"..... | 08:00.07 |
| Guest56445 | @chrisl Thanks for the pointers | 08:47.35 |
| chrisl | np | 08:51.14 |
| rayjj | morning, all | 12:43.07 |
| | I see that you are back on, kens. I left my laptop on, but the hotel system made me reconnect this AM | 12:44.12 |
| kens | turned off overnight | 12:45.28 |
| | and good moing | 12:45.36 |
| rayjj | chrisl: you are right about gs using the Mitchell filter, at least when /Interpolate true is specified. When it isn't, we follow the PLRM "center of pixel" rule. | 12:45.58 |
| | kens: see you for breakfast at 6:30am. Do you think we need to make sure that Tor knows that's when we are meeting ? | 12:47.01 |
| chrisl | rayjj: tbh, I really did know that, but I felt like making him do at least a little reading...... | 12:47.11 |
| rayjj | chrisl: np. I suspect that the color space processing would make using OpenGL not be of much use for images, except for a few simple cases. | 12:50.02 |
| rayjj | gets ready.... | 12:50.19 |
| chrisl | rayjj: I don't think he mentioned opengl, so he could be using one of the proprietary APIs - but even then, I doubt the model will exactly match the gs rendering library | 12:55.07 |
| rayjj | heads for the slopes (about 2hrs away)... | 13:52.30 |
| henrys | have fun rayjj | 13:55.48 |
| Robin_Watts | Morning fredross-perry | 15:42.43 |
| | No (official) meeting this week | 15:42.52 |
| fredross-perry | howdy | 15:42.55 |
| ghostbot | Welcome to #ghostscript, the channel for Ghostscript and MuPDF. If you have a question, please ask it, don't ask to ask it. Do be prepared to wait for a reply as devs will check the logs and reply when they come on line. | 15:42.55 |
| fredross-perry | right | 15:43.03 |
| Robin_Watts | but if you have any questions or anything, fire away, obviously. | 15:43.17 |
| | tor/mvrhel/ray/kens are skiing (or driving to ski slope at least) at the mo. | 15:43.45 |
| chrisl | henrys: did you see the question about the PCL font table on gs-devel? (I can't remember if you still get mails from there) | 15:48.47 |
| henrys | chrisl: I don't read it, can you send them here or to bugzilla? or forward the email to me. | 15:49.59 |
| | yeah just started to snow, very lightly here but probably worse in the mountains. | 15:50.45 |
| chrisl | henrys: I'll forward the mail. If you send me any answer, I'll include a pointer to IRC in the reply | 15:50.55 |
| Robin_Watts | It hailed here earlier. Only for 20 minutes or so. | 15:53.37 |
| | Guess where I was? | 15:53.45 |
| chrisl | Enjoying a comfortable sauna whilst observing the poor weather?? | 15:54.41 |
| Robin_Watts | Sadly no :) | 15:55.01 |
| chrisl | As long as it wasn't these uber-hail stones the size of golf balls...... | 15:56.39 |
| Robin_Watts | No. Initially it was quite nice (drier than rain, not that heavy), but then the wind shifted so it was coming at me sideways. | 15:58.30 |
| chrisl | Back in York, I once got caught in a *torrential* downpour about 4 miles from home. Freezing cold, and so soaked my trainers were squelching with every stride. Getting home was about the longest 4 miles I ever remember running..... | 16:00.53 |
| Robin_Watts | chrisl: lovely. | 16:03.36 |
| chrisl | And yet, I still miss it | 16:04.22 |
| Robin_Watts | henry: see ron on skype? | 16:12.55 |
| chrisl | henrys: thanks for the PCL fonts reply - I've sent it on with a pointer to here (and a warning about the font licensing) | 18:14.13 |
| henrys | chrisl: no problem | 18:14.37 |
| hyper_ch | hi henrys | 18:45.52 |
| henrys | hi hyper_ch | 18:46.23 |
| hyper_ch | hows your brain? ready for picking? | 18:46.36 |
| henrys | hyper_ch: sure you can ask a question if you want. | 18:47.25 |
| hyper_ch | well, I have that pdf that I ocred... so there's a text layer... you know any super smart way to remove that? | 18:47.52 |
| Robin_Watts | hyper_ch: What do you mean by a "text layer" ? | 18:48.14 |
| hyper_ch | well, normally when you do ocr on an image pdf, it will add an inivislbe text layer on top | 18:48.44 |
| henrys | Robin_Watts: I suspect he means "invisible" text | 18:48.52 |
| Robin_Watts | OK. | 18:48.57 |
| hyper_ch | not sure what it's called | 18:49.26 |
| | I just assumed it's like an photoshp/gimp file | 18:49.35 |
| Robin_Watts | invisible text is fine. | 18:49.35 |
| hyper_ch | containing multiple layers | 18:49.39 |
| Robin_Watts | No. | 18:49.42 |
| hyper_ch | bottomw one image layer | 18:49.42 |
| | then invisible text | 18:49.45 |
| Robin_Watts | pdf files are not constrained in that way. | 18:49.54 |
| | There is no specific concept of 'layer' in PDF. | 18:50.13 |
| | Nothing that simple :) | 18:50.20 |
| hyper_ch | but I like simple things :) | 18:50.39 |
| | so, is there an easy way to remove it? | 18:50.48 |
| Robin_Watts | So you had a.pdf, which was just an image. You fed it into some OCR software, and you got b.pdf out, a file with the image and some text. | 18:51.04 |
| henrys | Robin_Watts: you can dump images in mupdf though and if the ocr was stupid that's all you should have other than the invisible text. | 18:51.17 |
| Robin_Watts | And now you want to get a file with just the image again? | 18:51.18 |
| hyper_ch | Robin_Watts: right :) | 18:51.34 |
| | you summarized it perfectly | 18:51.42 |
| Robin_Watts | hyper_ch: Are you on unix or windows? | 18:51.51 |
| hyper_ch | linux | 18:51.56 |
| Robin_Watts | ok. | 18:51.59 |
| | cp a.pdf b.pdf | 18:52.04 |
| hyper_ch | but that keeps the invisible text | 18:52.22 |
| Robin_Watts | No. a.pdf was the original files with just the image in. | 18:52.43 |
| hyper_ch | Robin_Watts: I don't have it anymore | 18:52.59 |
| | I just have a pdf with invisible text | 18:53.23 |
| Robin_Watts | well, I can think of a couple of things to try. | 18:53.53 |
| | Firstly you could try running it through gs (gs -sDEVICE=pdfwrite -o c.pdf b.pdf) | 18:54.46 |
| hyper_ch | I'm happy with one | 18:54.46 |
| Robin_Watts | That will generate you a new pdf (c.pdf), that looks the same. | 18:55.42 |
| | It's possible that will strip out the invisible text, but I wouldn't bet on it. | 18:55.46 |
| hyper_ch | that didn't work | 18:56.00 |
| | text still tehre | 18:56.00 |
| Robin_Watts | I rather suspect that gs goes to some lengths to keep the invisible text on the grounds that most people want their stuff to remain searchable. | 18:56.04 |
| hyper_ch | maybe I could use imagemagick | 18:56.23 |
| Robin_Watts | OK. (Kens is the expert on pdfwrite, and he's off hurtling down mountains currently) | 18:56.24 |
| hyper_ch | converting it back to a pure image | 18:56.31 |
| Robin_Watts | Is each page a single image? | 18:56.56 |
| | (other than the invisible text) | 18:57.14 |
| hyper_ch | I need it for just one page. Because OCR put a lot of white spaces between almos every character | 18:57.22 |
| | hence render the OCR pretty much useless | 18:57.29 |
| | so I need a "pristine" example again to retry different settings | 18:57.41 |
| | convert a.pdf a.png resulted in a bad quality image | 18:57.55 |
| | same with a.bmp | 18:58.02 |
| Robin_Watts | No shit. | 18:58.05 |
| | The image in the PDF will be at whatever resolution the PDF was scanned at. | 18:58.43 |
| hyper_ch | any other smart suggestions? | 18:58.50 |
| Robin_Watts | hence when you render the image you must take pains to render at the same resolution, otherwise information will be lost. | 18:59.16 |
| hyper_ch | well, my main problem is that I don't have that dead-wood-original sample anymore | 18:59.41 |
| | otherwise I'd just rescan it | 18:59.59 |
| Robin_Watts | I asked if each page was a single image (other than the text) earlier, and you didn't answer. | 18:59.59 |
| hyper_ch | sorry, it's single page | 19:00.08 |
| Robin_Watts | Again, not what I asked. | 19:00.24 |
| hyper_ch | not sure what you mean | 19:00.33 |
| | what do you mean by that? | 19:01.28 |
| | I just scanned the original sheet in and run it through ocr | 19:01.39 |
| Robin_Watts | I'm struggling to find a simpler way to put it. | 19:01.42 |
| hyper_ch | I can give you the .pdf | 19:02.05 |
| Robin_Watts | That might be simplest. | 19:02.06 |
| hyper_ch | url in query | 19:02.59 |
| Robin_Watts | ok, so that's got a single fax image on the page. | 19:04.16 |
| hyper_ch | fax image? | 19:04.32 |
| chrisl | hyper_ch: if it's just a simple image with hidden text over it, you can convert to Postscript and then back to PDF..... ps2write then pdfwrite | 19:18.20 |
| hyper_ch | chrisl: I tried that but it didn't work | 19:18.45 |
| Robin_Watts | chrisl: I solved it for him. | 19:18.47 |
| hyper_ch | chrisl: however Robin_Watts used some emacs magic :) | 19:18.52 |
| Robin_Watts | I just edited the text out. | 19:18.57 |
| hyper_ch | as said, emacs magic | 19:19.08 |
| chrisl | Huh, Postscript doesn't do hidden text, so I wonder how it was preserved....... | 19:19.52 |
| hyper_ch | maybe I did it wrong | 19:20.15 |
| Robin_Watts | text is sent before the image. | 19:20.23 |
| | so it's white text, not invisible text. | 19:20.30 |
| hyper_ch | I opened it in okular | 19:20.31 |
| | started printing and printed to .gs | 19:20.39 |
| | then I used gs2pdf | 19:20.43 |
| chrisl | Ah, white text isn't hidden text, then - and that's a rather broken way to do that | 19:21.18 |
| hyper_ch | what's white text? | 19:21.35 |
| Robin_Watts | It's text. That's white. | 19:21.52 |
| chrisl | I'm rather surprised that even works | 19:23.36 |
| | I think I'll be off now - g'night all | 19:24.56 |
| hyper_ch | also I wonder, why is it device in -sDEVICE= always with caps? | 20:30.22 |
| Robin_Watts | -sXXXX says "set a dictionary value XXXX to a string value". | 20:41.59 |
| | In this case 'DEVICE' is the thing you are setting. | 20:42.12 |
| | It is (I believe) a postscript standard thing. | 20:42.23 |
| | i.e. the choice of "DEVICE" (as opposed to 'device' or 'Device') is something set by adobe. | 20:43.02 |
| fredross-perry | jogux: I just checked in some new stuff. look at line 1096 of MuDocumentController.m | 22:41.43 |
| marquessbr | hi all! | 22:47.57 |
| armandosbr | hi all | 22:51.32 |
| | I try to port my own app for android devices, it is ok, but I need to resize the view whose font is too small, someone here can help-me? | 22:55.10 |
| henrys | fredross-perry: jogux will be out this week. | 23:08.39 |
| fredross-perry | thanks, no rush. | 23:10.24 |
| henrys | kens:how was the trip? | 23:33.53 |
| kens | pretty good henrys | 23:37.39 |
| | sunny weather this mornong, snowed this afternoon | 23:37.53 |
| | supposed to be cold tomorrow, then sunny thursday | 23:38.19 |
| henrys | kens: we had some snow down here and I didn't know how heavy it would be in the mountains driving up. | 23:38.56 |
| kens | well this morning was clear, so I'm hoping we'll be OK coming back Thursday.... | 23:39.35 |
| | The hotel we were in (Microtel) is directly opposite the meeting hotel ;-) | 23:40.20 |
| | Forward 1 day (to 2015/03/04)>>> | |
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