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Questions tagged [transparency]

Transparency is the property of being see-through; a transparent object reveals objects behind it. Transparency is also known as alpha blending. The opposite of transparency is opacity.

Transparency in technology is an attribute of a graphical object and refers to the degree to which the object can be seen through.

Objects can be layered on top of one another, the order of which is decided by a . An object which is rendered "on top of" another may have a transparency level where the object underneath is seen through the object on top, with the view of the object underneath blended () with that of the object on top.

Transparency is the opposite of .

See also:

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transparency implementation in YUV422 using only Y

Lets say we have 2 images in YUV422 format and assume that the second image Y field of value 0x10 is being transparent and merged on to the first one with Cb and Cr overwritten. The product of such merge results in ugly borders (divided pixel line…
Ulterior
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IE7 auto-adds transparency to inline CSS

I have a PNG that has transparency in it. IE7, in all it's glory, takes my inline CSS and modifies it to include "background-color: transparent" in it. This is problematic because that CSS line screws up the table color underneath the PNG…
MarkP
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Can you use CSS blend modes to stack semi-transparent divs cleanly?

I want to have a stack of DIVs, like cards, that have a semi-transparent background. However I don't want their alpha values to add up when doing so. For instance in the example below where my two cards overlap: I want the overlapping area to not…
Primus202
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How can I overlay an angled gradient or fade over the corner of a video with ffmpeg?

I want to darken the corner of a video with a (for instance) 45-degree black gradient. I'd like to customize the angle, feathering, color and opacity. My video is 10-bit UHD HEVC and I need to output to 10-bit lossless intermediate (probably v210…
grgoelyk
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Delphi 7 AlphaBlend not working for dynamic form

I have created dynamic Form as the next : procedure TForm1.Button1Click(Sender: TObject); var Frm:TForm2; begin frm:=TForm2.Create(nil); Frm.Left:=5; Frm.Top:=5; Frm.Parent:=Self; Frm.OnCreate:=OncreateFrm; Frm.Show; end; and when am trying to…
Issam
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Using image transaprency make appear black "things"

I'm having troubles to correctly load and blit PNG image with Pygame. Code is actually working, but it display some strange and black "things" around my sprite : black things around my sprite To load tileset, I do: def TilesRessourceFile(self,…
Febvre Antoine
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Flash transparent background not working on Mac

Hi I just can't seem to get the background to be transparent on a Mac, see here: http://www.digiflipconcepts.com/smokinhot/templates/smokinhot/ I'm using wmode=transparent. I've been searching google for ages and see that wmode is not very stable…
morktron
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OpenCV draw line doesn't work on transparent image

I'm making a drawing program where you can later save and export your changes as an image. The non-transparent image option works perfectly, but the transparent option does not. The code I have right now is based on this post. Whenever I draw a line…
MmBaguette
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Replace Yellow Background Image with Transparency

I am trying to remove the yellow background from a set of images of this kind: and replace it with transparency using masks using the opencv library. There is my code: HSV_RANGES = { # red is a major color 'red': [ { …
Abdellahi Brahim
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Drawing a transparent object inside an opaque one

I'm trying to draw a transparent object inside an opaque cage, but what ever I seem to try I can't get it right. glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glClearColor( 0.0f, 0.0f, 0.0f, 0.0f );…
henryprescott
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Three.js Transparent Point Cloud Not Blending Points Together Correctly

I'm trying to use THREE.Points to create a point cloud for data visualization. I'd like to make the points transparent so that the viewer can get an idea of how dense the points are in a particular region. I'm using a sphere geometry and additive…
Brett L
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gnuplot: how to avoid viewing angle dependent semitransparent 3D surfaces?

I stumbled accross the following. If I plot, e.g. a cube using pm3d and define the sides to be semitransparent, I would expect that the cube looks the same if I rotate it by multiple of 90 degrees. However, apparently depending on the viewing angle…
theozh
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C# Fade-in and fade-out transparency when form is being moved

I have the code to make the form partially transparent when is being moved, but I want to know if it's possible to add fade-in and fade-out effects when I start moving and stop moving the form. EDIT The code I am using to add transparency to the…
Alan
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ffmpeg convert white color to alpha

Hello i took a picture with my camera :a drawing of a square frame on a white paper; i'm trying to convert the white to transparent and keep the black color frame. So i started making 1 palette with only 2 colors to make the colors uniform and 1…
user14955023
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make a rect transparent in pygame

I'm trying to make a kind of a Brick Breaker and got a problem with the transparency of the rectangle that surrounds the ball. every time it hits something you can see the rectangle. any suggestions?it also forces me to use a white background there…
shay
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