Image Capture Problems Pixelation

What Is Pixelation in Photography?

 

 

 

 

Pixelated images.

Earlier versions of digital photography often had edges that were pixelated, while most video games were coloured only in block form. This is not the case with the majority of current photography and video games. However, pixelation can still happen if you are not careful with your digital camera’s resolution settings.

Definition

• Pixelation happens when the individual pixels in a digital photograph are visible. Pixels are blocks of colour that make up the photograph. Pixelation only applies to the use of digital cameras, not regular cameras. In order to see the pixels, you can zoom in very close on a photograph.
• Pixilation is a term sometimes used to describe the act of turning a printed image into a digitized image file (such as the GIF file that is used to display an image on a Web page). As the image is captured, it is processed into a vectorized or rasterized file that can be used to illuminate colour units called pixels on a display surface.
• Pixelation is the display of a digitized image where the individual pixels are apparent to a viewer. This can happen unintentionally when a low-resolution image designed for an ordinary computer display is projected on a large screen and each pixel becomes separately viewable.

How To Avoid It

• To avoid having pixelated photographs, take pictures in high resolutions. When editing a picture, do not over compress the file. Over compression can have an adverse effect on JPEG files. For example, reducing the final quality of the Jpeg filein Adobe photoshop can cause pixelation. Finally, you can edit the image afterwards. Adobe Photoshop has an effect called “bicubic resampling,” which reduces the amount of pixelation in a photograph.

How To Make It

• If you enjoy the look of pixelation on your photographs, then you can either make it when you are taking the photograph or when you are editing it. To achieve the effect naturally, take a picture in a low resolution like a 400-by-600 size.

Pixelation Problems :

Pixels are the tiny dots that make up pictures on computer screens. Each pixel has 3 coloured dots (red, green and blue). Most monitors run at resolutions of 1024 x 768 and it displays images at 72 Dpi which is an hard thing to equate, but it refers to the inter-dot spacing of the monitor. Whatever the case, web graphics are created at 72 DPI while print ready graphics are made at 300DPI or more.

Using a graphic that is small and then scaling it up so large that the image creates noticeable pixelation. The pixelation appears when blurring, artefacts or jaggedness enter into the image. The pixelation is caused by a lack of information in the image.

You can always scale an image down, but you can’t scale an image up without degradation. There is only one exception and that is with vector images (ai, eps, and csv). Any raster image will degrade if it is scaled up. Programs like Photoshop will allow you to scale an image up, but in order to accomplish this task it will compensate for missing data by replicating existing data. The end result is jagged edges, blurring etc. In the end, all you have is an image that looks unprofessional.

The easiest way to beat this problem is just to avoid the situation that created it. Use high-resolution images to work with. There might be instances when you can’t use an image because it is too small

• Use High resolution Images to work with
• Use Vector graphicswhenever possible: .AI, .EPS etc
• Avoid scaling images up / if necessary do so in moderation
• Don’t be afraid to recreate small logos using vector tools

Resources

Ehow.com, google images