Interestingly, for LSUN dataset, the best FID score (3.48) is obtained when the generated images are compressed with JPEG quality 87. Note that LSUN dataset images were collected with JPEG compression (quality 75), whereas FFHQ images were collected as PNG. The FID scores under the images are calculated between all FFHQ images saved using the corresponding JPEG format and the PNG format.īelow, we study the effect of JPEG compression for StyleGAN2 models trained on the FFHQ dataset (left) and LSUN outdoor Church dataset (right). Images are perceptually indistinguishable from each other but have a large FID score. Image compression can have a surprisingly large effect on FID. However, it was not used in the existing TF-FID repo and set as False by default. Note that since TF 2.0, the new flag antialias (default: False) can produce results close to PIL. Other correctly implemented filters from PIL (Lanczos, bilinear, box) all result in relatively smaller FID score (≤ 0.75). The table below shows that FFHQ dataset images resized with bicubic implementation from other libraries (OpenCV, PyTorch, TensorFlow, OpenCV) have a large FID score (≥ 6) when compared to the same images resized with the correctly implemented PIL-bicubic filter. The inconsistencies among implementations can have a drastic effect of the evaluations metrics. Try out the different resizing implementations in the Google colab notebook here. They are often implemented incorrectly by popular libraries. Unfortunately, implementations differ across commonly-used libraries. The definitions of resizing functions are mathematical and should never be a function of the library being used.
There's no need to use functions when setting the width/height.Aliased Resizing and Surprising Subtleties in GAN Evaluation},Īuthor=, And undefined * container.width() is NaN - Not a Number. Stranger still, when you actually call setImageDims in the resize event handler, you don't provide that value at all, meaning it's undefined. And you basically "rename" it to container inside the function, so perhaps that'd be a better name to begin with? And $imgAspectRatio would imply that it's a jQuery object. selector is fine (if non-descriptive), but content_area is snake_case whereas you use camelCase (which is the JavaScript convention) everywhere else. There's little system in your variable-naming. Of course, you already have a resizeImage function which does the exact same thing - it's just hard coded to only use the body as its reference. For another, I'd just find resizeImage or maybe resizeToMatch to be more straightforward.
For one, I rarely see the need to abbreviate words.
#RESIZE IMAGE CALCULATOR CODE#
There's a lot of code here, so I'll just start with a single function: setImageDims I have also created a rudimentary fiddle to illustrate the imageCalc(), setImageDims(), and imageResize() functionality here. JQuery('.menu-main-container').css('display', 'block') SetImageDims('.com-background > img', '#main-content') setImageDims('.com-background > img', '#main-content', ratio1)
var ratio1 = imageCalc('.com-background > img') JQuery('.mobile-contain > a').bind(event, function(), 7000) Var ua = erAgent var event = (ua.match(/iPad/i)) ? 'touchstart' : 'click' Note: all these functions work (I do have an error imageResize('.com-background > img', ratio1) ratio1 is not defined within the window.resize function. The below scriptfile includes the issue above, and some functionality for mobile, and an overlay. First, an image gallery I have setup and now, Iframes. Now, I have got these functions working, however I feel like they could be more efficient/clean. I have created a set of functions to calculate the aspect ratio of an image, set a height/width on document.ready and on window.resize resize the image.
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