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What is an image?

An image is a visual representation of an object, person, or scene that can be captured and stored electronically. Images can be still or moving, and they can be displayed on a variety of devices, including computer screens, TVs, and mobile phones.

How is an image stored electronically?

An image is stored electronically as a series of pixels, which are tiny dots of color that together form the image. Each pixel is assigned a value that represents its color and brightness.

What is the difference between a raster and vector image?

A raster image is made up of pixels, while a vector image is made up of mathematical equations that define the image's shapes and lines. Raster images are better for photographs and detailed images, while vector images are better for simple designs and logos.

What is an aspect ratio?

An aspect ratio is the proportional relationship between an image's width and height. Common aspect ratios include 4:3 (standard definition TV), 16:9 (high-definition TV), and 1:1 (square images).

What is compression?

Compression is the process of reducing the size of an image file without losing too much quality. There are two types of compression: lossless and lossy. Lossless compression preserves all the original data, while lossless compression discards some data to achieve a smaller file size.

What is a file format?

A file format refers to the structure and layout of data stored in a computer file. It determines how the content is organized, stored, and interpreted by software programs. Different file formats are designed for specific types of data, such as text, images, audio, and video. The format of a file can impact its compatibility with different programs and operating systems. Some widely used file formats include .docx for Microsoft Word documents, .jpeg for images, .mp3 for audio, and .mp4 for video.

What is joint photographic experts' group (JPEG)?

A JPEG is a popular image file format that uses lossy compression to achieve small file sizes. JPEG is best for photographs and other complex images.

What are portable network graphics (PNG)?

PNG is a popular image file format that uses lossless compression to achieve small file sizes. PNG is best for images with transparency or sharp edges, such as logos and icons.

What is graphics interchange format (GIF)?

GIF is a popular image file format that uses lossless compression to achieve small file sizes. GIF is best for animated images or images with limited colors, such as logos and icons.

What is tagged image file format (TIFF)?

TIFF is a popular image file format that supports lossless compression and can contain multiple layers. TIFF is best for high-quality images that require editing or manipulation.

What is color depth?

Color depth refers to the number of colors that can be represented in an image. The higher the color depth, the more colors the image can display. Common color depths include 8-bit (256 colors), 16-bit (65,536 colors), and 24-bit (16.7 million colors).

What is color space?

Color space refers to the range of colors that can be represented in an image. Common color spaces include standard red, green blue (sRGB), Adobe RGB, and ProPhoto RGB. The choice of color space depends on the intended use of the image.

What is dots per inch (DPI)?

DPI is a measure of the resolution of an image when it is printed. The higher the DPI, the more detailed the printed image will be. A resolution of 300 DPI is standard for most printed materials.

What is pixelation?

Pixelation occurs when an image is enlarged beyond its original resolution, causing the pixels to become visible and the image to lose detail. Pixelation can be avoided by using high-resolution images or vector graphics.

What is a watermark?

A watermark is a semi-transparent image or text that is added to an image to identify its source or ownership. Watermarks can be added to images using various software programs or online tools and can help protect against unauthorized use of an image.

What is image editing software?

Image editing software is a type of software that allows you to edit and manipulate digital images. Examples of image editing software include Adobe Photoshop, GNU image manipulation program (GIMP), and Paint Shop Pro.

What is a thumbnail?

A thumbnail is a small version of an image that is used to represent the full-size image. Thumbnails are commonly used on websites to display multiple images in a gallery or to provide a preview of an image before clicking on it.

What is a stock image?

A stock image is a pre-made image that can be licensed and used for various purposes, such as marketing materials, websites, and social media posts. Stock images are available from various websites and can be either free or paid.

What is image recognition?

Image recognition is the ability of a computer to identify objects, people, or scenes in an image. This technology is used in various fields, such as security, healthcare, and automotive industries.

What is deep learning?

Deep learning is a type of machine learning that involves training artificial neural networks to recognize patterns in data. Deep learning is often used in image recognition and natural language processing.

What is augmented reality?

Augmented reality is a technology that overlays digital content onto the real world. This technology is often used in mobile apps and allows users to interact with digital objects in a real-world setting.

What is virtual reality?

Virtual reality is a technology that simulates a real-world environment using computer-generated imagery. This technology is often used in gaming and entertainment but also has applications in healthcare and education.

What is a digital camera?

A digital camera is a camera that captures and stores images digitally. Digital cameras have replaced film cameras and have become popular due to their convenience, portability, and ability to store many images on memory cards.

What is a resolution?

Resolution refers to the number of pixels that make up the display on a screen. It is usually expressed as the width by height in pixels, such as 1920x1080 or 1280x720. The higher the resolution, the more pixels there are, resulting in a clearer and more detailed image. Resolution plays a crucial role in determining the quality of visual content, including images, videos, and text. Higher resolutions are especially beneficial for larger screens, where individual pixels may become more visible at lower resolutions.

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