The following script creates a transparent GIF with a red circle drawn in the middle: from PIL import Image, ImageDraw img = Image.new(‘RGBA’, (100, 100), (255, 0, 0, 0)) draw = ImageDraw.Draw(img) draw.ellipse((25, 25, 75, 75), fill=(255, 0, 0)) img.save(‘test.gif’, ‘GIF’, transparency=0) and for PNG format: img.save(‘test.png’, ‘PNG’)
Draw text into a temporary blank image, rotate that, then paste that onto the original image. You could wrap up the steps in a function. Good luck figuring out the exact coordinates to use – my cold-fogged brain isn’t up to it right now. This demo writes yellow text on a slant over an image: … Read more
I came up with my own solution that I find acceptable. What I did was render the text large, like 3x the size it needs to be then scale it resize it down with antialiasing, it’s not 100% perfect, but it’s a hell of a lot better than default, and doesn’t require cairo or pango. … Read more
Disparity map refers to the apparent pixel difference or motion between a pair of stereo images. To experience this, try closing one of your eyes and then rapidly close it while opening the other. Objects that are close to you will appear to jump a significant distance while objects further away will move very little. … Read more
The bitmap constructor has resizing built in. Bitmap original = (Bitmap)Image.FromFile(“DSC_0002.jpg”); Bitmap resized = new Bitmap(original,new Size(original.Width/4,original.Height/4)); resized.Save(“DSC_0002_thumb.jpg”); http://msdn.microsoft.com/en-us/library/0wh0045z.aspx If you want control over interpolation modes see this post.
I had the same problem and I solved that by upgrading this package using the command below: pip install -U Pillow
Occlusion means that there is something you want to see, but can’t due to some property of your sensor setup, or some event. Exactly how it manifests itself or how you deal with the problem will vary due to the problem at hand. Some examples: If you are developing a system which tracks objects (people, … Read more
If you’re really interested in the technical details, check out the source code: png_optimizer.cc jpeg_optimizer.cc webp_optimizer.cc For PNG files, they use OptiPNG with some trial-and-error approach // we use these four combinations because different images seem to benefit from // different parameters and this combination of 4 seems to work best for a large // … Read more