I expect an even better performance improvement. You may use other libraries like opencv to make the grayscale conversion and then build the Qimage from an opencv buffer.You already get an important performance boost just by inverting the loops.GreaterThan(QT_MAJOR_VERSION, 4): QT += widgets Testimage.cpp file: #include "testimage.h" ********* Finished testing of TestImage ********* Uncompromising in its quality and control, Qimage Ultimate combines incredible power and performance with a purpose built interface designed specifically for photo printing. *rgbpixel = QColor(gray, gray, gray).rgba() Ī quick test with an 3585 x 2386 image gave ********* Start testing of TestImage *********Ĭonfig: Using QTest library 4.7.4, Qt 4.7.4ģ90 msecs per iteration (total: 390, iterations: 1)ġ25 msecs per iteration (total: 125, iterations: 1)
Which gives : for (int ii = 0 ii (scan + jj*depth) Mike is suggesting that you try this: See screen snap 038. Finally always put the x coordinate in the inner loop. The default skin has a gray background for all windows and dialogs so if they look black on one particular system, you are probably going to need to correct the problem with that system: calibrate and profile the monitor so gray no longer looks black.
Assuming you have a 32 bpp image, you can use QRgb to iterate over the scan. Pixels on a scan (horizontal line ) are consecutive. I find that, with those limitations in mind, C1's printing is useable, but very far from ideal, especially considering the price! I haven't seen it change in any way from version 10 to 11 to 12 to 2, macOS 10.12 to 10.15, good or bad, apart from possibly some minor bug fixes.Rather than using the slow functions QImage::pixel and QImage::setPixel, use It's also very easy to loose settings, such as Profile, Rendering Intent, Black Point Compensation, Page Orientation, Printer type, etc. Its 'Proofing' lacks the 'Paper Color' setting of PS and LR. I use completely different brightness settings for PS (85cd/m2) and C1 (60cd/m2), finding that C1 displays the image much too light compared to the print. I too use an Eizo with built-in calibrator, which has the advantage that it can store several different calibrations.
You should also use such 'standard' RGB test imges to test your monitor calibration settings, which may not be optimal for some applications. There are many out there designed for normal inkjets in RGB, such as: Continuing the Qimage legacy that has seen more than a decade of experience and innovation in. Qimage Ultimate is the most advanced photo printing software in the world. The test image shown appeared to be one designed for commercial printing. tags: photo print, print photo, quality print, print, printer, photo. Inkjet printers absolutely can't work properly with CMYK, especially when it's for an unrelated printing technology! Not sure where the confusion about 'FOGRA 39' is coming from as it's a CMYK profile for OFFSET litho and nothing to do with Inkjet printers.
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