Image processing in simple terms is a process method to convert an image to digital aspects and performs some operation on that image in order to get an optimized image or to extract some important information from it. It uses computer algorithms to provide user demanded output, it can be in the form of an image of information related to that image. Image processing can be done using various computer graphics applications.

Image processing is taking part in every sector like the medical sector, transmission & encoding, video processing, pattern recognition, color processing, etc. Even in the daily life of human being image processing plays a key role and this role will increase in the future. The steps of processing may be different for different types of computer graphics but the core aspects will be the same.

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People are using image processing knowingly or unknowingly in capturing their daily moments in photos and videos. They use many types of filtering, effects, and animations to enhance their photos then use them on their social media profile. The scope of image processing is growing day by day and it is taking its place within engineering, medical science, scientific work, and computer science area too.

Image Processing Steps

Image processing can be defined in these three steps.

1. Importing image through image importing tool.
2. Analyzing and manipulation of image.
3. User desired output can be an image or some information related to image.

Types of Image Processing in Computer Graphics

There are two types of image processing on the basis of methodology.

1. Analogue Image Processing

It can be easily categorized by its name, analog image processing includes hard copy methods like printouts, banners, and photographs. These types of processed images are analyzed by analysts using different types of skillsets to gather information. It is easier to collect information from an analog method because the information that needs to be collected from analog image processing does not require to be precise. Analysts gather necessary information by visualizing the image.

2. Digital Image Processing

Digital image processing is just the opposite of analog image processing. It manipulates the digital image using digital techniques like pre-processing, enhancement, display, and information extraction. The analysts analyze the image digitally so it needs technical knowledge and skillsets. The information extracted by using this method is more precise and accurate.

Working of image processing

Initially, the real-life scene is captured by the camera. After capturing that image is imported into the image processing system. The image processing system may be on the same device or in a separate external device. Image processing systems process the image according to the will of the user. The output may be another enhanced image or some information comes out from that image.

Difference between Computer Graphics and Image Processing

Computer Graphics and Image Processing are completely different subject matters. It seems to be the same because both subject matters are related to the image and pictures. Computer Graphics is the process of synthesizing pictures from mathematical or Geometrical models. In Computer Graphics pixels are taken as mathematical parameters and users draw different types of images using these parameters. For graphic designers, there is a trending topic to learn Sustainable Graphic Design.

Whereas, image processing is a technique of converting, enhancing and analyzing the image to give an output. The output may be an enhanced image or maybe some useful information extracted from that image. It can be understood in another form as image processing is the reversed process of computer graphics. Image processing is one of the advantages of Computer Graphics.

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