image-scaling

问题 I want to downsize some of my images in my README.md on GitHub and it works fine in my Markdown editor using something like  However, when I upload it to GitHub, the Markdown viewer seems to not like it. Any suggestions or ideas how I can downsize the images without reducing the resolution of the images themselves? 回答1: Github doesn't apply the style attribute but obeys the width and height . So for github you can use the following HTML tag directly in the

问题 I'm beginning a large project which requires VBA functionality for several forms of image manipulation with Access and Excel. The first was simple rotation of jpeg images. Existing answers involve workarounds or third-party plugins. How can I programmatically crop, rescale, flip, or rotate images? Workarounds or third-party apps won't suffice for this project. 回答1: The Windows Image Acquisition API (WIA) is an ideal solution in this case. It provides all of the functionality used by Microsoft

问题 Does anyone have the secret formula to resizing transparent images (mainly GIFs) without ANY quality loss - what so ever? I've tried a bunch of stuff, the closest I get is not good enough. Take a look at my main image: http://www.thewallcompany.dk/test/main.gif And then the scaled image: http://www.thewallcompany.dk/test/ScaledImage.gif //Internal resize for indexed colored images void IndexedRezise(int xSize, int ySize) { BitmapData sourceData; BitmapData targetData; AdjustSizes(ref xSize,

问题 Does anyone have the secret formula to resizing transparent images (mainly GIFs) without ANY quality loss - what so ever? I've tried a bunch of stuff, the closest I get is not good enough. Take a look at my main image: http://www.thewallcompany.dk/test/main.gif And then the scaled image: http://www.thewallcompany.dk/test/ScaledImage.gif //Internal resize for indexed colored images void IndexedRezise(int xSize, int ySize) { BitmapData sourceData; BitmapData targetData; AdjustSizes(ref xSize,

问题 I want to scale up a part of a picture, in this example, a nose. I have a function to select the part of the picture I want to enlarge. def copyAndPaste(picture): height = getHeight(picture) width = getWidth(picture) newPicture = makeEmptyPicture(width, height) for x in range(width): for y in range(height): pxl = getPixel(picture,x,y) if (x>48 and x<59) and (y>58 and y<71): newPxl =getPixel(newPicture, #?,#?) else: newPxl = getPixel(newPicture, x,y) color = getColor(pxl) setColor(newPxl,color

问题 I'm trying to resize an image while preserving the aspect ratio from the original image so the new image doesn't look squashed. eg: Convert a 150*100 image into a 150*150 image. The extra 50 pixels of the height need to be padded with a white background color. This is the current code I am using. It works well for resizing but changing the aspect ratio of the original image squashes the new image. private void resizeImage(string path, string originalFilename, int width, int height) { Image

问题 I insert an image into an Excel range like so: private System.Drawing.Image _logo; public ProduceUsageRpt(..., System.Drawing.Image logo) { . . . _logo = logo; } . . . var logoRange = _xlSheet.Range[ _xlSheet.Cells[LOGO_FIRST_ROW, _grandTotalsColumn], _xlSheet.Cells[LOGO_LAST_ROW, _grandTotalsColumn]]; Clipboard.SetDataObject(_logo, true); _xlSheet.Paste(logoRange, _logo); Unfortunately, the image is too large for that range (currently row 1 to row 4, column 16). Instead of doing the polite

问题 Everybody knows that IE7 sucks at scaling images. I just recently discovered the trick of using img { -ms-interpolation-mode: bicubic; } to force IE to use bicubic sampling when scaling images so that they look better. However, I was wondering if anyone knows the performance impact of using ms-interpolation-mode. 回答1: It will be slower than nearest-neighbor, but give you a better image. You should just time it and see if it matters. 回答2: I've used it before, and as long as you are not doing

问题 please have a look at the following code: (I removed all doctypes etc for readability). I guess the code is pretty self-explaining: The javascript code retrieves the height and width from the image below and creates two new variables (newHeight and newWidth) which are shrunk by 80% of the original values. When the document loads, those two new variables (newHeight and newWidth) should be assigned to the height and width attribute of the image, but this doesn't happen. Can somebody help me out

问题 Suppose we have an image that is 400x200 and another that is 200x400 and I want them to fit in a 200x200 box so the first should be scaled to 200x100 and the second to 100x200 We won't know the dimensions of the images in advance. [edit] Plenty of good answers, thank you all! 回答1: One way is to use object-fit: img { object-fit: contain; width: 200px; height: 200px; } JSFiddle Demo: https://jsfiddle.net/t75cxqt0/2/ 回答2: Set both of these: max-width: 200px; max-height: 200px; That will keep