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Questions tagged [gaussianblur]

In image processing, a Gaussian blur (also known as Gaussian smoothing) is the result of blurring an image by a Gaussian function (named after mathematician and scientist Carl Friedrich Gauss).

Gaussian Blur is a simple algorithm of blurring. In image processing, a Gaussian blur (also known as Gaussian smoothing) is the result of blurring an image by a Gaussian function (named after mathematician and scientist Carl Friedrich Gauss).

It is a widely used effect in graphics software, typically to reduce image noise and reduce detail. The visual effect of this blurring technique is a smooth blur resembling that of viewing the image through a translucent screen, distinctly different from the bokeh effect produced by an out-of-focus lens or the shadow of an object under usual illumination.

Gaussian smoothing is also used as a pre-processing stage in computer vision algorithms in order to enhance image structures at different scales - see scale space representation and scale space implementation.

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How to have Gaussian blur in with any background

I know this question has been asked numerous times, but my questions is kinda different since I have created a box that is blurred. But my question focuses on the background image of the blurred box. So basically, I have the following blurred box.…
DannyBoy
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why the ScriptIntrinsicBlur is faster than my method?

i use the Renderscript to do the gaussian blur on a image. but no matter what i did. the ScriptIntrinsicBlur is more more faster. why this happened? ScriptIntrinsicBlur is using another method? this id my RS code: #pragma version(1) #pragma rs…
惊奇漫画
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Drawing circles around a certain area with opencv

I am working on a code which accesses my camera, turns the output into grayscale, applies a gaussian blur finds the brightest area/pixel and circles it. Everything but the drawing-a-circle-part works fine. The command I am trying to use does…
Jennan
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Fastest Gaussian Blur Not Working

I am not good at JavaScript and have been trying to get Ivan Kuckir's Fastest Gaussian Blur code to work with no success. When I load the page, it becomes unresponsive so that I will have to close the window somehow. The code I use follows. What am…
Kamran
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Blur image using Opencv in JAVA

I am working on image blur functionality. To achieve this I am using opencv with JAVA. But the blur ratio of the image is according to the quality of the uploaded image, means if I upload low quality image, then it blurs the image as expected, but…
Aniket Patil
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Android - Gaussian blur like effect - OpenGL

Where not specified this question is just building on top of the CameraCaptureActivity within the grafika project found on github. It has a built in blur effect that utilises a 3x3 kernel kernel = new float[] { 1f/16f, 2f/16f, 1f/16f, …
Joe Maher
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Gaussian blur with two pixel radius

import time import picamera import picamera.array import cv2 with picamera.PiCamera() as camera: with picamera.array.PiRGBArray(camera) as stream: camera.resolution = (320,240) while True: …
Aswathy
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Feather only side of a div and blur on only left and right side

I have a list of images to scroll. I want that the left and right side of a div which is containing the images div container become blurred, and only one image is visible but the side one shows blurred. My code is below: .img-tokry { width:…
M.amanullah behlim
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Having an Issue with understanding bilateral filtering

I once again come to you with a question regarding filters, in this case: Bilateral Filters. I do understand the general concept of it and I did read several sources on the topic (including some questions on stackoverflow). Most sources use this…
AnnemarieWittig
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CIFilter - GaussianBlur - weird white bezels

[I'm in the process of learning of Swift Development. Last time I've tried to add a blur for a picture of Ronald Reagan. First I found UIBlurEffect method, but it wasn't exactly what I expected. Then I tried to use CIFilter method. I walked through…
Czkii
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Accessing frame data with OpenCV C++

I'm trying to write a Gaussian Blurr OpenCv program where I input a mp4 video , read it frame by frame, and to each frame I apply a 3x3 stencil that essentially blurrs the image. However, my problem is that I don't know how to access the data of…
anthonym650
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Extract standard deviation and mean of pixel values within a radius using Gaussian filtering in R

I have a matrix like the following one, obtained from a raster file: 0 0 0 0 0 0 0 4 254 252 0 0 0 0 0 0 0 0 255 246 0 0 0 0 0 0 0 1 255 246 0 0 0 0 0 4 32 254 255 246 0 0 0 0 8 …
CafféSospeso
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What exactly is doing the radius in Gaussian blur algorithm?

Does doing a Gaussian blur on a 240*240 pixels image with radius of X will produce the same "blur" than doing a Gaussian blur on a 100*100 pixels image with the same radius ? what exactly is doing the radius in Gaussian blur algorithm ? often…
zeus
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White gaussian noise addition using Qt

I looked out in the internet as well as I looked in here (stackoverflow) and could not find a good answer on how to implement white gaussian noise addition into my qimage object. or if there is an existing function which I can use? any…
Daniel Eitan
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Applying gaussian blur to grayscale image

i want an easy way to apply the gaussian blur to a grayscale image i am using bmp library and i am trying to apply gaussian function to the pixels you can access the image here https://e.top4top.net/p_832qn9kv1.png image[i][j] =…
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