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Except for the high end models, recent iMacs and Macbooks only have integrated graphics which are not supported, and there's no option to replace On Apple computers support for GPU acceleration is currently limited. These 'mobile' GPUs are less powerfull than desktop graphics cards (in order to keep down power consumption)īut will allow around 1.5 to 2x faster stitching. Many higher end laptops have a discrete GPU. The speed gains on laptop computers are limited: many laptops only have integrated graphics, which are not supported by PTGui (and would be slower than the CPU anyway).
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On most Windows desktop computers the GPU can be replaced easily adding a new $300 graphics card Recommended: although the panorama doesn't need to fit entirely in the video RAM, moving dataīetween the CPU and the GPU is relatively slow and should be avoided to get the best performance.
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PTGui needs at least 512MB of video memory, but 2 GB is On Windows every recent GPUįrom AMD and NVIDIA should work. To use the GPU for stitching a video card supporting OpenCL 1.1 is required. (6 core Intel i7, Windows 8.1, 32GB of RAM, NVidia Geforce Titan, Samsung SSD) stitches in 22 seconds, compared toġ51 seconds in PTGui 9.2. Gigapixel Panorama Speedtest on a particular machine Tests suggest a speedup anywhere between 1.5x and 10x depending on hardware and on the kind of panorama.īut to give one benchmark as an example: the Such as the GPU's processing power versus the CPU speed, how much time is spent writing the results to the disk, etc. So how much speedup should you expect compared with PTGui 9? This depends on many factors Is a significant reduction in stitching time. The new stitching engine is fully compatible with previous versions changes are entirely under the hood and the only noticable difference The new stitcher also uses significantly less memory, which speeds up stitching of large gigapixel panoramas in particular. Of course stitching without using the graphics card remains possible,Īnd CPU stitching performance has been improved as well, especially on computers with 4 or more CPU cores. (NVIDIA and AMD) and supported on Windows and Mac. For GPU processing the stitcher uses OpenCL, a technology supported by both major GPU vendors That's exactly what's new in PTGui 10: a new stitching engine, rewritten from scratch to get the best performance Process data extremely fast but software has to be rewritten to be able to use that power.
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Computers could become fasterīy increasing the clock speed at which the processor was running.īut in the past few years CPU clock speeds have approached physical limits and instead computers haveīecome more powerful by increasing the number of processor cores.Īlso through new technologies the graphics card (GPU)Ĭan be used not only for display but for general computing tasks as well.Ī GPU is an extremely powerful processor with several hundreds or even thousands of processor cores. The original stitching engine in PTGui started life at a time when most PCs were still running on a single processorĪnd graphics cards were only used to display things on a screen. For a detailed list of new features and changes see the This enables stitching of 'difficult' scenes, where other programs fail.PTGui 10 features a completely rebuilt, blazing fast stitching engine with GPU acceleration! Furthermore there's a new tone mapper and it comes with a sphericalīelow is a quick overview of the new version. * PTGui stitches most panoramas fully automatically, but at the same time provides full manual control over every single parameter. * Layered output allows full control over the final stitched result * Virtually unlimited output size: create Gigapixel panoramas from hundreds of images! * No need to keep the camera level: PTGui can stitch rotated and tilted images * Create 360 degree cylindrical panoramas, 'flat' partial panoramas and even spherical 360x180 degree panoramas * PTGui can stitch multiple rows of images Some benefits of PTGui, when compared to other stitching software: Use PTGui to stitch any number of photos into a panoramic image. Originally developed as a Graphical User Interface for Panorama Tools (hence the name), PTGui now is a full featured photo stitching application. PTGui is panoramic stitching software for Windows and Mac OSX.