Top "Alpha-transparency" questions

The alpha transparency of an image defines how transparent the pixels of this image are.

How to create a semi transparent shape?

I would like to know how to draw semi-transparent shapes in OpenCV, similar to those in the image below (from …

c++ opencv shape alpha-transparency
How to create transparent activity in android?

How to create transparent activity in android in that screen tap to dismiss button automatically dismiss the activity. please provide …

android alpha-transparency
Alpha-gradient on Android

I need to create an alpha-gradient on the edge of the ImageView. Preferably using only XML. Image for example

android imageview gradient android-imageview alpha-transparency
Is it possible to have two overlapping PictureBox controls with transparent images?

Having two overlapping PictureBox controls, I'm trying to make the transparent areas of the picture box let the controls below (…

c# .net winforms picturebox alpha-transparency
Manually alpha blending an RGBA pixel with an RGB pixel

I am trying to do an alpha blend operation of an RGBA image (foreground image), on to a RGB image (…

algorithm image-processing image-manipulation alphablending alpha-transparency
ggplot legend showing transparency and fill color

I'm plotting two semi-transparent ribbons together. Using the code below, without the scale_fill_manual portion, I get basically what …

r ggplot2 legend alpha-transparency
Why does openCV's convertto function not work?

I have an image which has 4 channels and is in 4 * UINT8 format. I am trying to convert it to 3 channel …

c++ opencv alpha-transparency
R plot legend with transparent background

How to R plot legend with transparent background when using plot() function ?

r plot legend alpha-transparency
Access to raw data in ARGB_8888 Android Bitmap

I am trying to access the raw data of a Bitmap in ARGB_8888 format on Android, using the copyPixelsToBuffer and …

android bitmap java-native-interface alpha-transparency argb
How to set alpha value for drawable in a StateListDrawable?

I want to change a drawable's alpha value when it is pressed. So I create two drawables and put them …

android alpha-transparency