Search found 875 matches

by Timur Born
Mon Oct 09, 2017 8:40 pm
Forum: PDF-XChange Editor
Topic: OCR and removing path from Content view for graphics
Replies: 11
Views: 1962

Re: OCR and removing path from Content view for graphics

Maybe reprint the file to a new PDF and thus create a single layer of text again?!
by Timur Born
Fri Oct 06, 2017 4:03 pm
Forum: PDF-XChange Editor
Topic: Scrolling a page at a time in facing view
Replies: 5
Views: 1493

Re: Scrolling a page at a time in facing view

Seems like I got confused. CTRL+Up/Down does flip single pages, but only the counter, not the actual page. This would be something I would also like to see changed in Ribbon mode. There is kind of a workaround: In Standard mode + Two Pages, you can switch between "Show Cover page" on and o...
by Timur Born
Fri Oct 06, 2017 3:05 pm
Forum: PDF-XChange Editor
Topic: Scrolling a page at a time in facing view
Replies: 5
Views: 1493

Re: Scrolling a page at a time in facing view

- You can enable full screen Ribbon mode by assigning a keyboard shortcut to it. Personally I use ALT+R for Ribbon and ALT+S for Standard.

I am sure that I just made the page flipping work the way you wanted, but now it doesn't. I will try again later when I find time and report back.
by Timur Born
Tue Oct 03, 2017 7:30 pm
Forum: PDF-XChange Editor
Topic: freeze Ups on an Ipad, when using a PDF from editor
Replies: 8
Views: 1930

Re: freeze Ups on an Ipad, when using a PDF from editor

It's worth mentioning that Acrobat for iPad may freeze and crash, but at least it allows to enter something into a selected form field for this file. Freeze/crash also only seems to happen once you enter something or navigate within form fields. I tried various other PDF apps and all showed the same...
by Timur Born
Wed Sep 27, 2017 9:32 pm
Forum: PDF-XChange Editor
Topic: Elephant in the room?
Replies: 3
Views: 1466

Re: Elephant in the room?

So the next release will be version 7? This means we have to pay for the upgrade, I suppose?
by Timur Born
Wed Sep 27, 2017 9:14 pm
Forum: PDF-XChange Editor
Topic: Opening pdf file causes computer reboot
Replies: 15
Views: 3795

Re: Opening pdf file causes computer reboot

- Check if you did disable your Windows swap file (should not).

- Try to update the graphic carder driver.

- Try to disable the graphic card driver (switch to Microsoft Standard VGA driver via Windows Device Manager).
by Timur Born
Fri Sep 22, 2017 4:01 pm
Forum: PDF-XChange Editor
Topic: Multi-threaded image rendering
Replies: 39
Views: 10142

Re: Multi-threaded image rendering

Once all shapes and images are removed the remaining text rendering runs effectively at single-core load (6.25%). Splitting it into more threads again results in the same total CPU load and no perceivable performance differences. This is even worse than before, because with shapes and images present...
by Timur Born
Fri Sep 22, 2017 3:36 pm
Forum: PDF-XChange Editor
Topic: Multi-threaded image rendering
Replies: 39
Views: 10142

Re: Multi-threaded image rendering

2 rendering, 16 thumbnail, 16 working:
editor_2_threads_rm.png
editor_2_threads_rm.png (9.98 KiB) Viewed 9630 times
16 rendering, 16 thumbnail, 16 working:
editor_16_threads_rm.png
editor_16_threads_rm.png (10.03 KiB) Viewed 9630 times
No perceived or measurable performance difference while scrolling through uncached pages of the PDF file.
by Timur Born
Fri Sep 22, 2017 7:58 am
Forum: PDF-XChange Editor
Topic: Multi-threaded image rendering
Replies: 39
Views: 10142

Re: Multi-threaded image rendering

As a last remark about multi-threading in Editor: Total CPU load is always the same for scrolling in a complex document (columns of text, tables, bitmap images and shapes), regardless of how many threads are used . I get 10% total load for Editor using 2 threads and I get 10% total load using 16 thr...
by Timur Born
Wed Sep 20, 2017 12:43 am
Forum: PDF-XChange Editor
Topic: Color Management issues (black point?)
Replies: 11
Views: 2259

Re: Color Management issues (black point?)

I stumbled over a surprising side-issue: Turns out that Editor's considerable slowness/rendering lag with this document can also be attributed to the use of CMYK transparencies. Once I manually switch to RGB the same file renders a lot faster. This does not seem to be a CPU load issue (no core maxed...
by Timur Born
Tue Sep 19, 2017 3:58 pm
Forum: PDF-XChange Editor
Topic: Color Management issues (black point?)
Replies: 11
Views: 2259

Re: Color Management issues (black point?)

I see no visible change when I switch from RGB to CMYK in Reader DC. Please try yourself with the original file.
by Timur Born
Tue Sep 19, 2017 3:40 pm
Forum: PDF-XChange Editor
Topic: Color Management issues (black point?)
Replies: 11
Views: 2259

Re: Color Management issues (black point?)

I extracted an image out of the original PDF and then printed it to PDF via Faststone + Primo. The resulting PDF properly uses RGB and shows the same colors in Editor, Reader and Faststone. Since the extracted image already uses higher Saturation (similar to setting the original PDF to RGB or using ...
by Timur Born
Tue Sep 19, 2017 9:17 am
Forum: PDF-XChange Editor
Topic: Multi-threaded image rendering
Replies: 39
Views: 10142

Re: Multi-threaded image rendering

I just noticed one more area where Editor is purely single-threaded: Search of multiple documents.

At least I would assume that searching 8 documents in parallel using 8 threads may lead to faster results than searching one document after another using only a single thread?!
by Timur Born
Tue Sep 19, 2017 9:11 am
Forum: PDF-XChange Editor
Topic: Search text inside multiple PDF files
Replies: 14
Views: 2549

Re: Search text inside multiple PDF files

The most convenient way still seems to be to use the "All Opened documents" search option. If you need to search the same files over and over again then you could save those open files as a Session.
by Timur Born
Tue Sep 19, 2017 8:45 am
Forum: PDF-XChange Editor
Topic: Multi-threaded image rendering
Replies: 39
Views: 10142

Re: Multi-threaded image rendering

I also wonder why there are always two PDFXEditCore.x64.dll threads present that occupy CPU cores without ever doing any processing (zero CPU cycles)?! There is also one thread that never exceeds 0.01% CPU load ever. All three of these threads seem to be created before the load intensive rendering t...
by Timur Born
Tue Sep 12, 2017 5:51 pm
Forum: PDF-XChange Editor
Topic: Multi-threaded image rendering
Replies: 39
Views: 10142

Re: Multi-threaded image rendering

One more thing to add here: Even when I set only 4 threads maximum for rendering, thumbnails and working it happens regularly that the PdfXEdit.exe thread shares a logical core with one of the rendering threads. Overall it seems to happen most of the time at any number of threads higher than 2 (or w...
by Timur Born
Tue Sep 12, 2017 5:21 pm
Forum: PDF-XChange Editor
Topic: Gray Scale: Gray Gamma 2.2
Replies: 17
Views: 3820

Re: Gray Scale: Gray Gamma 2.2

The name of the ticket sounds quite misleading, but let's see what comes out of it. Thank you.
by Timur Born
Tue Sep 12, 2017 5:20 pm
Forum: PDF-XChange Editor
Topic: Color Management issues (black point?)
Replies: 11
Views: 2259

Re: Color Management issues (black point?)

Thank you Stefan, but the "black rectangles" issue does not happen when MS ICM is selected, it happens when the engine is switched from one to the other without a restart of Editor. It doesn't matter if you switch from LCMS to MS ICM or the other way around. You can reproduce this by using...
by Timur Born
Tue Sep 12, 2017 4:42 pm
Forum: PDF-XChange Editor
Topic: Color Management issues (black point?)
Replies: 11
Views: 2259

Re: Color Management issues (black point?)

Thanks for the answer, but I do not understand it. Please read my posts again and look at the screenshots, LCMS is not working properly in Editor and using MS ICM is just a workaround to get somewhat usable results.
by Timur Born
Tue Sep 12, 2017 1:35 pm
Forum: PDF-XChange Editor
Topic: Multi-threaded image rendering
Replies: 39
Views: 10142

Re: Multi-threaded image rendering

Hi Timur. Hi Victor. Which books have you read about multithreading? None, but I am open to suggestions, especially regarding any documentation that does not just list API formats for coders. Do you know how multithreading in windows works? If not - please read some technical documentation or books...
by Timur Born
Tue Sep 12, 2017 12:16 am
Forum: PDF-XChange Editor
Topic: Multi-threaded image rendering
Replies: 39
Views: 10142

Re: Multi-threaded image rendering

Is Editor supposed to allocated threads to the same "Ideal Core" when others are still unused? Here are two example "Ideal Core" allocations with rendering threads set to 8 and working threads set to 16. Core Parking disabled, running on a 8C/16T CPU. Actively rendering: 2, 3, 6,...
by Timur Born
Mon Sep 11, 2017 6:07 pm
Forum: PDF-XChange Editor
Topic: Color Management issues (black point?)
Replies: 11
Views: 2259

Re: Color Management issues (black point?)

Some more oddities with the color-management settings in Editor. In one file when I switch the engine without restarting Editor it turns this conversion_engine_switch_bug_01.jpg into this conversion_engine_switch_bug_02.jpg I attached the extracted page from the original file for you to run tests on.
by Timur Born
Mon Sep 11, 2017 5:44 pm
Forum: PDF-XChange Editor
Topic: Gray Scale: Gray Gamma 2.2
Replies: 17
Views: 3820

Re: Gray Scale: Gray Gamma 2.2

Which color profile was associated with PDF-XChange Standard printer? The Editor uses printer's profile on printing instead of profiles specified in its settings if the printer has own profile. I did not change X-Change's profile after installation, which means no profile is set, aka sRGB. I printe...
by Timur Born
Mon Sep 11, 2017 7:26 am
Forum: PDF-XChange Editor
Topic: Gray Scale: Gray Gamma 2.2
Replies: 17
Views: 3820

Re: Gray Scale: Gray Gamma 2.2

Any feedback on this yet?
by Timur Born
Thu Sep 07, 2017 10:53 pm
Forum: PDF-XChange Editor
Topic: Color Management issues (black point?)
Replies: 11
Views: 2259

Re: Color Management issues (black point?)

Thanks for getting back to me. Switching from Auto (CMYK) to RGB does not exactly solve the problem. While the "haze" vanishes the image becomes too saturated, the same as Viewer using sRGB working space. (Viewer saturates even more when the DELL U3014 working space is used.) cmyk_vs_rgb.p...
by Timur Born
Wed Sep 06, 2017 8:53 pm
Forum: PDF-XChange Editor
Topic: Features I am missing in Editor
Replies: 103
Views: 23418

Re: Features I am missing in Editor

I don't understand the response. Your program feels snappy because it inserts a blank page in between the old page and the new page rendering? Are you using asynchronous rendering mode anyway? Personally I prefer programs to be snappy, not just feel like it. But if you need some kind of graphic feed...
by Timur Born
Wed Sep 06, 2017 4:12 pm
Forum: PDF-XChange Editor
Topic: Multi-threaded image rendering
Replies: 39
Views: 10142

Re: Multi-threaded image rendering

That's fine, especially because I mean to discuss multi-core improvements here. ;) It's just a shame that modern software still leaves most of the CPUs processing power barren while the user has to wait for results to appear on screen. Maybe it's time to replace PDF with a more modern format then. C...
by Timur Born
Wed Sep 06, 2017 4:05 pm
Forum: PDF-XChange Editor
Topic: Features I am missing in Editor
Replies: 103
Views: 23418

Re: Features I am missing in Editor

Special wrote:If the blinking white hurts your eyes then try changing that white to dark grey or something instead. Preferences > Accessibility > Page Background Color
Thanks for the hint, but then I get dark blinking for white PDF files. I would prefer no blinking when pages are turned over.
by Timur Born
Wed Sep 06, 2017 4:02 pm
Forum: PDF-XChange Editor
Topic: Features I am missing in Editor
Replies: 103
Views: 23418

Re: Features I am missing in Editor

Hi Stefan, thanks for getting back to me. I believe the page flipping behaviour was changed due to popular demand and to be consistent with other PDF tools. Too bad, I always conceived it as a disadvantage of other PDF tools, especially for users of Logitech hyperscroll wheels that flip really fast....
by Timur Born
Wed Sep 06, 2017 2:05 pm
Forum: PDF-XChange Editor
Topic: Features I am missing in Editor
Replies: 103
Views: 23418

Re: Features I am missing in Editor

Here are two more suggestions for features I am missing in Editor: - One feature of X-Change Viewer that I like over all other PDF Software (including Editor) is that it always prioritizes page flipping/count over rendering. If I scroll quickly then the page count keeps up in asynchronous mode and e...
by Timur Born
Wed Sep 06, 2017 1:52 pm
Forum: PDF-XChange Editor
Topic: Multi-threaded image rendering
Replies: 39
Views: 10142

Re: Multi-threaded image rendering

Hi Stefan, thanks for the reply! We will see what can be done so that we can utilize more than one thread (e.g. one will render an already decoded image while another thread continues the decoding process) - but there are limitations in the PDF standard itself that can prevent us from making some si...
by Timur Born
Wed Sep 06, 2017 12:09 pm
Forum: PDF-XChange Editor
Topic: Multi-threaded image rendering
Replies: 39
Views: 10142

Re: Multi-threaded image rendering

What I wish is better CPU scaling so that page rendering takes less time (less lag) on modern CPU hardware. We get more and more CPU cores, but reading PDF files still is a "waiting" experience. I am hoping for multiple CPU cores to be more useful for rendering and other work tasks (like s...
by Timur Born
Wed Sep 06, 2017 10:43 am
Forum: PDF-XChange Editor
Topic: Multi-threaded image rendering
Replies: 39
Views: 10142

Re: Multi-threaded image rendering

I used the Content panel to select all images and remove them. What remains is text and lots of path objects. Those path objects make a good part of the page border art even when the background images are removed. Seems like Editor needs to re-render those path objects on every page, even when they ...
by Timur Born
Wed Sep 06, 2017 10:02 am
Forum: PDF-XChange Editor
Topic: Multi-threaded image rendering
Replies: 39
Views: 10142

Re: Multi-threaded image rendering

This is how Editor scales with 8 and 16 threads flipping pages in Two Pages view. The document uses the very same background and logo images on every double-page, with occasional additional images thrown in on some pages. Flipping pages noticeably lags as long as those pages are not cached in memory...
by Timur Born
Wed Sep 06, 2017 7:27 am
Forum: PDF-XChange Editor
Topic: UI Text and Menus is HUGE
Replies: 12
Views: 2067

Re: UI Text and Menus is HUGE

6 points is the smallest you can use and it's just readable on my 30" 2560 x 1600 display. The problem is that this will not change the height of the bars itself, mainly because the icons stay large.
by Timur Born
Tue Sep 05, 2017 11:11 pm
Forum: PDF-XChange Editor
Topic: Color Management issues (black point?)
Replies: 11
Views: 2259

Color Management issues (black point?)

Hello, I am experiencing problems with color management. Here is one particular file where Editor's color management is very obviously wrong, as the output is hazy. This may or may not be a black compensation issue?! At least it is curious that colors get brighter/less contrasty when blackpoint comp...
by Timur Born
Tue Sep 05, 2017 9:43 pm
Forum: PDF-XChange Editor
Topic: Memory + Disk cache issues
Replies: 54
Views: 13486

Re: Memory + Disk cache issues

The whole discussion would not have come up if the memory cache wasn't bugged to the point where it flushed every 30-120 seconds. So please pause discussion until next build is released - it should fix cache behavior. I can do so, but my point was not about the memory cache behavior itself, but tha...
by Timur Born
Mon Sep 04, 2017 9:52 pm
Forum: PDF-XChange Editor
Topic: Memory + Disk cache issues
Replies: 54
Views: 13486

Re: Memory + Disk cache issues

I can understand if there is not enough man-power to implement functions that are seen as "exotic" by the developers. I do not follow the "wasted resources" argument, though. Not only is harddrive/SSD space cheap as never, but at the same time that only 100 mb is written to my ch...
by Timur Born
Sat Sep 02, 2017 4:42 pm
Forum: PDF-XChange Editor
Topic: Multi-threaded image rendering
Replies: 39
Views: 10142

Re: Multi-threaded image rendering

On a side note: most of the renderings threads can be suspended without Editor being (noticeably) affected. But the other rendering threads increase their CPU load to a permanent 70-100% as soon as the first new line is rendered then and stay there even when Editor is idle in the background. So some...
by Timur Born
Sat Sep 02, 2017 2:48 pm
Forum: PDF-XChange Editor
Topic: Multi-threaded image rendering
Replies: 39
Views: 10142

Re: Multi-threaded image rendering

To clarify the "average" reading: This was measured during load while Editor was flipping (not scrolling) through hundreds of pages with a Logitech hyper-fast scrolling wheel spinning freely. By the means of an Autohotkey script the scroll command kept going to the Editor window regardless...
by Timur Born
Sat Sep 02, 2017 1:57 pm
Forum: PDF-XChange Editor
Topic: Multi-threaded image rendering
Replies: 39
Views: 10142

Re: Multi-threaded image rendering

I am still trying to find out where the bottle-necks in Editor's PDF rendering are. One thing I noticed is that while I experience lags during Editor's memory cache buildup none of my CPU cores is fully utilized. For better comparison I measured two performance settings, one where Editor is set to o...
by Timur Born
Fri Sep 01, 2017 10:30 pm
Forum: PDF-XChange Editor
Topic: Facing Page Mode and Next Page
Replies: 42
Views: 10614

Re: Facing Page Mode and Next Page

Any news on this? My last reported behavior (see above) still seems to be present.
by Timur Born
Fri Sep 01, 2017 5:28 pm
Forum: PDF-XChange Editor
Topic: Memory + Disk cache issues
Replies: 54
Views: 13486

Re: Memory + Disk cache issues

Thanks for the explanations and taking the time! It's well appreciated. If you are using File mapping windows case is not used at all, and data from disk is directly mapped into memory, and all read/write operation are hidden deeply into OS core, so there is no way to control them using any utilitie...
by Timur Born
Fri Sep 01, 2017 4:20 pm
Forum: PDF-XChange Editor
Topic: Memory + Disk cache issues
Replies: 54
Views: 13486

Re: Memory + Disk cache issues

I would like this too - it would be (for me) the perfect solution. I would happily allocate 50 gb SSD space just for PDF Editor's persistent cache. Consider that my *single* file example already used 7.5 gb RAM cache and most of my files are filled with text and images and little empty spaces. Ever...
by Timur Born
Fri Sep 01, 2017 1:44 pm
Forum: PDF-XChange Editor
Topic: Memory + Disk cache issues
Replies: 54
Views: 13486

Re: Memory + Disk cache issues

I went another step further and assumed that most of Editor's memory cache not only includes the decoded images of the PDF file, but also the completely rendered pages. This assumption makes sense, because caching the whole file uses over 7 GB of memory cache, much more than the total sum of all ima...
by Timur Born
Fri Sep 01, 2017 12:37 pm
Forum: PDF-XChange Editor
Topic: Memory + Disk cache issues
Replies: 54
Views: 13486

Re: Memory + Disk cache issues

Again, we use File mapping, no read/write routines called for temporary files, this is may be why you don't see reading at all. I would assume that the System process should at least register for read operations then, just as it does for the write operations to the cache directory? It does not, and...
by Timur Born
Fri Sep 01, 2017 11:23 am
Forum: PDF-XChange Editor
Topic: Save as Optimized JPEG 2000 issues
Replies: 7
Views: 2268

Save as Optimized JPEG 2000 issues

Hello, I just tested the various compression settings of Editor's "Save as Optimized" feature and it seems that most JPEG 2000 quality levels are broken. - Minimum, low, medium and Maximum all create the very same file/image of maximum quality. The file size is even larger than anything I ...
by Timur Born
Fri Sep 01, 2017 11:06 am
Forum: PDF-XChange Editor
Topic: Gray Scale: Gray Gamma 2.2
Replies: 17
Views: 3820

Re: Gray Scale: Gray Gamma 2.2

Timur Born wrote:- Editor uses image smoothing (anti-aliasing) while exporting to image(s), even when the "Image Smoothing" option is turned off in Page Display -> Rendering. There doesn't seem to be an option to turn that off.
This also happens when the "Edit Image using" function is used.
by Timur Born
Thu Aug 31, 2017 10:14 pm
Forum: PDF-XChange Editor
Topic: Memory + Disk cache issues
Replies: 54
Views: 13486

Re: Memory + Disk cache issues

Thanks for the information. So %temp%\PDFXeditor is the correct path then? I wonder why this is written to by the System process instead of the Editor process? While over 2.5 GB data reside in Editor's memory cache there is less than 100 MB of data (often less than 60 MB) in temp\PDFXeditor. Anyway,...
by Timur Born
Thu Aug 31, 2017 9:04 pm
Forum: PDF-XChange Editor
Topic: Image smoothing cannot be turned off
Replies: 36
Views: 6188

Re: Image smoothing cannot be turned off

I just had a case where anti-aliasing happened again, despite "Image Smoothing" being disabled. This file had never been opened with "Image Smoothing" enabled before (created only today). This time I only had to enabled/disabled "Image Smoothing" to fix it, no need to s...