Find area with content and get its bouding rect – Photoshop
I'm using OpenCV 4 - python 3 - to find an specific area in a black & white image. This area is not a 100% filled shape. It may hame some gaps between the white lines. This is the base…
Inverting black and white on a bitmap is not working – Photoshop
I do some image processing with OpenCV. I want to invert this bitmap (black to white, white to black) and i have some problems with it. I got this Bitmap after doing this: // to grey Imgproc.cvtColor(mat, mat, Imgproc.COLOR_RGB2GRAY, 4);…
Automatically adjusting brightness of image with OpenCV – Photoshop
I want to adjust the brightness of an image to a certain value in OpenCV. For example, consider this image: I calculate the brightness with: import cv2 img = cv2.imread(filepath) cols, rows = img.shape brightness = numpy.sum(img) / (255 *…
How to draw quality image stroke (border) with Imagemagick or PIL? – Photoshop
I tried to draw image stroke (border) to my png image. (*expected 19px stroke layer style result by Photoshop) and I found helpful script from imagemagick forum. (imagemagick discourse) convert source.png -background '#2a7940' -alpha background -channel A -blur 9x11 stroked.png…
Handle multiple transformation on an Image – Photoshop
I'm running a project that will do more or less the same as CameraRaw/Photoshop does. The thing is, how do I handle multiple mods on the image matrix? let me explain, I read the image Using OpenCV function, and I…
Understanding NetPBM's PNM nonlinear RGB color space for converting to grayscale – Photoshop
I am trying to understand how to properly work with the RGB values found in PNM formats in order to inevitably convert them to Grayscale. Researching the subject, it appears that if the RGB values are nonlinear, then I would…
Why PIL convert('RGB') makes some transparent into black but some into white? – Photoshop
I have two similar masked images with transparent backgrounds. I want to get image difference and expect it as low value as images are similar. lenna1.png lenna2.png But the result shows huge difference over transparent area which looks just same.…
'Stretching' histograms (levels) in Numpy, Python – Photoshop
I have grayscale image whose background is, on a 0-255 color scale, a mid-white color with an average pixel color value of 246; the foreground is mid-grey with an average pixel-color value of 186. I would like to 'shift' every…
What Is the Algorithm Behind Photoshop's “Black and White” Adjustment Layer?
I did lot's of research but I didn't find anything (but I also don't know what kind of keywords to search for exactly). I want to be able to convert an input RGB image to grayscale but I want to…
How to create media down-loader like whats app, telegram in Xamarin forms? and how to create whats app UI
I am creating social application in Xamarin.Forms where I want to implement media downloader to download image and video. currently I am using Xamarin.FFImageLoading.Transformations nuget to load image. how to create Whatsapp UI using xamarin forms for android and iOS?…