Blurring The Image


Guys let me ask you a question. What happens when your spectacles are lost and you are desperate to read something. You are witnessing a phenomenon known as Blurring. Well guys that brings us to a new topic called Image Blurring. 

So guys you might have a question now why to blur the image? Because normally blurring created discomfort. Here is the truth. If you see any sensitive data in the website, normally its blurred. I think you might have got some idea about blurring now. But honestly i feel blurring the sensitive data to hide is a bad form. Because the image blurred can be reverted back.

There are many techniques for blurring the image. Most important ones are

      1)   Gaussian Blur
      2)   Convolve
      3)   Motion Blur
      4)   Faster Motion Blur etc


We will learn about all these topics in detail in following chapters. But an important pre-requisite I feel before starting the blurring chapters is that you must know Buffering the Image. If you know buffering the image you can skip the next session else Just glance through it to get some idea.

Just look at this figure for Gaussian Blur.


Comments

Post a Comment

Popular posts from this blog

Mini Project for Image Processing Beginners

A short project for Engineering graduates. Take an MRI Scanned image or a X-Ray image of healthy person as well as a patient and compare the pixel values, edges etc. This will help you understand the general values of a healthy body. Using that as mean or median, try to create an diagnoses software using these images as input. I will add the sample code or algorithm for your reference. So keep checking the blog for more.
Read more

Program to convert image byte array to PDF

Simple sample program to convert image byte array to PDF         //input path. path where byte array is saved         String pathOfByteArrayFile = "/home/inputByteArray.txt";         //output path. path where rendered you need to save . Output PDF should render properly         String outputPDFPath = "/home/output.pdf";         try         {             File file = new File(pathOfByteArrayFile);             FileOutputStream fout = new FileOutputStream(outputPDFPath);             byte[] bArray = Base64.decode(FileUtils.readFileToByteArray(file));             fout.write(bArray);             fout.close();             assertFalse(false);         }         catch (Exception e)         {             //your logic for failure         }
Read more

Program to convert base64 to Image and vice versa

Code snippet: This method decodes the base64 string into the bytes and converts it into an image .      * Note: this method expects input to be an encoded Image in base64 format. It can't work with other other files encoded in base64 format ByteArrayInputStream bis = new ByteArrayInputStream(Base64.getDecoder().decode(base64data)); BufferedImage img = ImageIO.read(bis); bis.close(); This method encodes the PNG image to base64 format ByteArrayOutputStream output = new ByteArrayOutputStream(); ImageIO.write(image, "PNG", output); String encodedString = Base64.getEncoder().encodeToString(output.toByteArray()); output.close();
Read more