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To cite Creative Commons images properly, include the creator's name, the title of the image, the license type (such as CC BY 4.0), and a link to the original image source.
Actually, "royalty free images" does not mean that the image is free. It means that once the fee is paid (if any) you are able to use the image multiple times without paying multiple times or acquiring the license multiple times.
The answer is yes, but only if you acquire it legally and follow the terms and conditions outlined on the website from which you downloaded it. Most royalty-free images cost money, although a few are offered for free download. "Royalty free" does not necessarily mean the image is free, but it means that you are granted a license to use (or "perform") it for various purposes. There may be restrictions on the use, or the cost may be higher if used for advertising. The image does not become your property, nor do you own the copyright once you acquire it. For example, if you would like to use the image for a CD cover, you may need to pay for something called an "extended license," (or a similar term) which will allow you to use the image to promote a paid product. There are many websites that license cheap royalty-free images, called "stock images". Some license amateur photography; others license only professional or a combination of professional and high-quality non-professional work.
A concave mirror can produce a real or virtual image, depending on the location of the object. Real images are formed in front of the mirror and can be projected onto a screen, while virtual images are formed behind the mirror and cannot be projected. The characteristics of the image, such as magnification and orientation, are determined by the mirror's focal length and the object's distance from it.
Binary images, Indexed images, Grayscale images, True color images
The definition of a concrete images is an image that cannot be disproved. This image can be proof of evidence for example.
Depends on the image format:
images of poo get blurry
Real images can be obtained on the screen,whereas virtual images can't be obtained on the screen
The easiest way is to use images that are entirely your own original work, or images in the public domain. The next easiest way is to get a license for the image, which can be as cheap and simple as seeking out Creative Common-licensed images. Otherwise, simply ask for permission.
Vector and bitmap are both image files. Bitmapped images are images that are stored on a pixel by pixel basis and because of this, when you enlarge the image it can appear blocky. A vector image is constructed from dots, lines, shapes, etc. Each part has a particular position within the image with it's own dimensions. Because vector images are constructed using images, they can be enlarged without loss of image quality. Vector images do not get the blocky appearance of an enlarged bitmap image.
Vector and bitmap are both image files. Bitmapped images are images that are stored on a pixel by pixel basis and because of this, when you enlarge the image it can appear blocky. A vector image is constructed from dots, lines, shapes, etc. Each part has a particular position within the image with it's own dimensions. Because vector images are constructed using images, they can be enlarged without loss of image quality. Vector images do not get the blocky appearance of an enlarged bitmap image.