aspect ratio
relation between the width and height of an image on the screen | ||||
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Aspect Ratio Definition from Computer & Internet Dictionaries & Glossaries
| FOLDOC |
aspect ratio
<graphics> The ratio of width to height of a pixel, image, or display screen. Square pixels (1:1) are considered preferable but displays are usually about 5:4.
(1994-11-30)
<graphics> The ratio of width to height of a pixel, image, or display screen. Square pixels (1:1) are considered preferable but displays are usually about 5:4.
(1994-11-30)
| Integrated Circuit Terminology |
Aspect Ratio
the depth or height of a feature divided by the width of the feature. A high aspect ratio indicates a feature is narrow relative to it's height or depth. Example high aspect ratio features would be, contacts that are narrow relative to their depth, trenches that are narrow relative to their depth or metal lines that are tall relative to their width.
the depth or height of a feature divided by the width of the feature. A high aspect ratio indicates a feature is narrow relative to it's height or depth. Example high aspect ratio features would be, contacts that are narrow relative to their depth, trenches that are narrow relative to their depth or metal lines that are tall relative to their width.
| A Glossary of Internet & PC Terminology |
Aspect Ratio
The Ratio of the screens width to its height so if you are using 640 X 480 the Aspect ratio is 4:3
The Ratio of the screens width to its height so if you are using 640 X 480 the Aspect ratio is 4:3
| Digital Video (DV) & video edit terms / Eng2Eng v1.0 (web compilation) |
Aspect ratio
The ratio of the width of the picture to the height. Aspect ratios can be expressed as ratios, such as 4:3, or as numbers, such as 1.33.
The ratio of the width of the picture to the height. Aspect ratios can be expressed as ratios, such as 4:3, or as numbers, such as 1.33.
aspect ratio
Proportional height and width of a video image. The NTSC standard for is 4:3 for convential monitors such as home television sets, and 16:9 for HDTV.
| Jensen's Technology Glossary |
Aspect ratio
The ratio of the horizontal to vertical size of the screen. Some monitors display rectangular pixels which can make the picture or image appear stretched. Software that allows images to be resized and changed with respect to aspect ratios greatly facilitates authoring. Otherwise, images have to be transported to other software for such changes and then transported back in a cumbersome process that makes authors grateful when aspect ratios and image sizes can be modified without such difficulties. Macromedia Director is one of the very few hypermedia authoring systems that has a utility for changing the scale and aspect ratios of imported bitmap pictures as well as rotating and inverting such pictures.
The ratio of the horizontal to vertical size of the screen. Some monitors display rectangular pixels which can make the picture or image appear stretched. Software that allows images to be resized and changed with respect to aspect ratios greatly facilitates authoring. Otherwise, images have to be transported to other software for such changes and then transported back in a cumbersome process that makes authors grateful when aspect ratios and image sizes can be modified without such difficulties. Macromedia Director is one of the very few hypermedia authoring systems that has a utility for changing the scale and aspect ratios of imported bitmap pictures as well as rotating and inverting such pictures.
| Internet Glossary |
Aspect ratio
In computer graphics, the relative horizontal and vertical sizes. For example, if a graphic has an aspect ratio of 2:1, it means that the width is twice as large as the height. When resizing graphics, it is important to maintain the aspect ratio to avoid stretching the graphic out of proportion.
The term is also used to describe the dimensions of a display resolution. For example, a resolution of 800x600 has an aspect ratio of 4:3.
In computer graphics, the relative horizontal and vertical sizes. For example, if a graphic has an aspect ratio of 2:1, it means that the width is twice as large as the height. When resizing graphics, it is important to maintain the aspect ratio to avoid stretching the graphic out of proportion.
The term is also used to describe the dimensions of a display resolution. For example, a resolution of 800x600 has an aspect ratio of 4:3.
| Television and Video Glossary |
Aspect Ratio
The ratio of width to height for a picture or screen. The present day TV standards (NTSC, PAL, SECAM) are all based on a 4:3 (1.33:1) aspect ratio. This is called the Academy ratio and most movies prior to 1950 were shot with this ratio. Wide screen movies were invented to attract moviegoers who would otherwise stay at home watching TV. The U.S. high definition TV standard calls for a 16:9 (1.77:1) aspect ratio. Several other aspect ratios are used in movie production, 1.85:1, 2.00:1, and 2:35:1 being common.
The ratio of width to height for a picture or screen. The present day TV standards (NTSC, PAL, SECAM) are all based on a 4:3 (1.33:1) aspect ratio. This is called the Academy ratio and most movies prior to 1950 were shot with this ratio. Wide screen movies were invented to attract moviegoers who would otherwise stay at home watching TV. The U.S. high definition TV standard calls for a 16:9 (1.77:1) aspect ratio. Several other aspect ratios are used in movie production, 1.85:1, 2.00:1, and 2:35:1 being common.
| Multimedia Glossary |
Aspect ratio
height-X-width proportions of graphics. Some programs allow you to maintain the aspect ratio when sizing a picture, i.e. when you change the width, the height changes proportionally so that the resulting image does not look distorted. See graphics .
height-X-width proportions of graphics. Some programs allow you to maintain the aspect ratio when sizing a picture, i.e. when you change the width, the height changes proportionally so that the resulting image does not look distorted. See graphics .
| Steve's Digicams Digital Camera Dictionary |
Aspect Ratio
The ratio of horizontal to vertical dimensions of an image. (35mm slide frame is 3:2, TV 4:3, HDTV 16:9, 4X5 film 5:4)
The ratio of horizontal to vertical dimensions of an image. (35mm slide frame is 3:2, TV 4:3, HDTV 16:9, 4X5 film 5:4)
| INTERNET TERMS&ACRONYMSV1.0 |
ASPECT RATIO
The ratio of width to height of a pixel,image,or display screen.Square pixels (1:1) are considered preferable but displays are usually 5:4.
The ratio of width to height of a pixel,image,or display screen.Square pixels (1:1) are considered preferable but displays are usually 5:4.
| Video Essentials Glossary of Terms |
Aspect Ratio
defines the shape of the rectangular picture in a TV set. It is the width of the picture relative to the height. Our standard TV picture, in terminology used by that industry, is 4 units wide by 3 units high, or 4:3 (read as 4 by 3) in aspect ratio. There is more than one way to express an aspect ratio. In film terms the width of the screen is 1.33 times the height. Divide 4 by 3 and you get 1.33333... It has an aspect ratio of 1.33:1 (read as 1.33 to 1). Since the :1 is always the same it is often dropped for the definition. We then say that the set has a 1.33 aspect ratio instead of saying it has a 1.33:1 aspect ratio. This is an easy system to use in that the larger the number the wider the set. A 1.78 set is wider in aspect ratio than a 1.33 set. Of the two numbering systems, you might initially think it's easier to use the 4:3 instead of 1.33:1 or just plain 1.33. That works until you get to multiple aspect ratios. Then it becomes difficult to determine what the numbers are telling you about the shape of the picture. Picking on two widescreen sets that have been available in the U.S., which is wider, one that is 16:9 or one that is 16:10.5? Asking the same question in decimal systems makes it much easier to answer that question. Which is wider, 1.78:1 or 1.52:1? The decimal system makes it much easier to determine the correct answer. 1.78 is wider than 1.52. Since there are a number of aspect ratios currently in use, not all of which can be expressed as whole numbers, the decimal system is by far the better choice. The film community has many more aspect ratios and has therefore adapted the decimal system to describe the shape of the picture. There are currently two standard TV aspect ratios in the U.S., 1.33 (4:3) and 1.78 (16:9). The 1.52 aspect ratio set is sort of a compromise in the transition from one system to another. They alter picture geometry to get either 1.33 or 1.78 to show up on the 1.52 screen. In the DTV world we’ll see a bit of 1.55 or 14:9 as another option in the compromise. That’s what will be done to 1.33 images as they are upconverted to a raster that is defined as 1.78. Some of the top and bottom of the 1.33 image will be cut off so that the image can appear to be wider on the 1.78 set. There will still be slight black bars on the left and right edges of the image. Several manufacturers are advocating 1.85 because it's a common aspect ratio for many American movies. The Director's Guild has called for a study of making 2:1 the shape of new video displays. It is also possible that some day the high definition active picture area will be redefined as 2.35 from its current 1.78 aspect ratio. This is just another extension of defining the 1.33 aspect ratio of standard definition television to 1.78 in the DVD format. If the future of television is widescreen, is one aspect ratio better than another? Knowing that we will have to accommodate the 1.33 aspect ratio for some time to come, the question becomes how wide can we go and still deal with the 1.33 image in the center? The resolution of current display technology would suggest that 1.78 is the upper limit of our current capability. The 1.33 image is compromised by only being able to use the resolution in the center of the display and images wider than 1.78 can’t use the resolution available at the top and bottom of the display. Some of these problems can be partially resolved by the use of high quality scalers and displays that far exceed the resolution of the source signal. That gets tough to accomplish as the resolution of our source signals goes up. It looks as if the 1.78 imager has a long life ahead of it as a compromise between 1.33 and all of the wider aspect ratio pictures. The majority of Video Essentials on DVD is produced in 1.33. Only Title 20 is in 1.78.
defines the shape of the rectangular picture in a TV set. It is the width of the picture relative to the height. Our standard TV picture, in terminology used by that industry, is 4 units wide by 3 units high, or 4:3 (read as 4 by 3) in aspect ratio. There is more than one way to express an aspect ratio. In film terms the width of the screen is 1.33 times the height. Divide 4 by 3 and you get 1.33333... It has an aspect ratio of 1.33:1 (read as 1.33 to 1). Since the :1 is always the same it is often dropped for the definition. We then say that the set has a 1.33 aspect ratio instead of saying it has a 1.33:1 aspect ratio. This is an easy system to use in that the larger the number the wider the set. A 1.78 set is wider in aspect ratio than a 1.33 set. Of the two numbering systems, you might initially think it's easier to use the 4:3 instead of 1.33:1 or just plain 1.33. That works until you get to multiple aspect ratios. Then it becomes difficult to determine what the numbers are telling you about the shape of the picture. Picking on two widescreen sets that have been available in the U.S., which is wider, one that is 16:9 or one that is 16:10.5? Asking the same question in decimal systems makes it much easier to answer that question. Which is wider, 1.78:1 or 1.52:1? The decimal system makes it much easier to determine the correct answer. 1.78 is wider than 1.52. Since there are a number of aspect ratios currently in use, not all of which can be expressed as whole numbers, the decimal system is by far the better choice. The film community has many more aspect ratios and has therefore adapted the decimal system to describe the shape of the picture. There are currently two standard TV aspect ratios in the U.S., 1.33 (4:3) and 1.78 (16:9). The 1.52 aspect ratio set is sort of a compromise in the transition from one system to another. They alter picture geometry to get either 1.33 or 1.78 to show up on the 1.52 screen. In the DTV world we’ll see a bit of 1.55 or 14:9 as another option in the compromise. That’s what will be done to 1.33 images as they are upconverted to a raster that is defined as 1.78. Some of the top and bottom of the 1.33 image will be cut off so that the image can appear to be wider on the 1.78 set. There will still be slight black bars on the left and right edges of the image. Several manufacturers are advocating 1.85 because it's a common aspect ratio for many American movies. The Director's Guild has called for a study of making 2:1 the shape of new video displays. It is also possible that some day the high definition active picture area will be redefined as 2.35 from its current 1.78 aspect ratio. This is just another extension of defining the 1.33 aspect ratio of standard definition television to 1.78 in the DVD format. If the future of television is widescreen, is one aspect ratio better than another? Knowing that we will have to accommodate the 1.33 aspect ratio for some time to come, the question becomes how wide can we go and still deal with the 1.33 image in the center? The resolution of current display technology would suggest that 1.78 is the upper limit of our current capability. The 1.33 image is compromised by only being able to use the resolution in the center of the display and images wider than 1.78 can’t use the resolution available at the top and bottom of the display. Some of these problems can be partially resolved by the use of high quality scalers and displays that far exceed the resolution of the source signal. That gets tough to accomplish as the resolution of our source signals goes up. It looks as if the 1.78 imager has a long life ahead of it as a compromise between 1.33 and all of the wider aspect ratio pictures. The majority of Video Essentials on DVD is produced in 1.33. Only Title 20 is in 1.78.
Aspect Ratio Definition from Language, Idioms & Slang Dictionaries & Glossaries
| WordNet 2.0 |
aspect ratio
Noun
1. the ratio of the width to the height of a tv picture
(hypernym) ratio
Noun
1. the ratio of the width to the height of a tv picture
(hypernym) ratio
| hEnglish - advanced version |
aspect ratio
aspect ratio
\aspect ratio\ (aëronautics) the ratio of the long to the short side of an aëroplane, aërocurve, or wing.
aspect ratio
n : the ratio of the width to the height of a tv picture
aspect ratio
\aspect ratio\ (aëronautics) the ratio of the long to the short side of an aëroplane, aërocurve, or wing.
aspect ratio
n : the ratio of the width to the height of a tv picture
Aspect Ratio Definition from Entertainment & Music Dictionaries & Glossaries
| film and video |
Aspect Ratio
The proportion of picture width to height (1.33:1, 1.66:1, 1.85:1 or 2.35:1).
The proportion of picture width to height (1.33:1, 1.66:1, 1.85:1 or 2.35:1).
| English to Federation-Standard Golic Vulcan |
Aspect ratio (aero.)
rala-pul-tavat
rala-pul-tavat
Aspect Ratio Definition from Science & Technology Dictionaries & Glossaries
| Dictionary of Automotive Terms |
Aspect ratio
1. The relationship in a tire or wheel between the distance from the rim to the tread (section height) and the tire's width. Thus, in a P185/80R13 tire, 80 is the aspect ratio, showing the height is 80% of the width. A lower aspect ratio describes a shorter, wider tire.
2. In a wing, it is the relationship of its span (horizontal length) to its chord (height).
1. The relationship in a tire or wheel between the distance from the rim to the tread (section height) and the tire's width. Thus, in a P185/80R13 tire, 80 is the aspect ratio, showing the height is 80% of the width. A lower aspect ratio describes a shorter, wider tire.
2. In a wing, it is the relationship of its span (horizontal length) to its chord (height).
| Telecommunication Standard Terms |
aspect ratio
In facsimile or television, the ratio of the width to the height of a picture, document, or scanning field.
In facsimile or television, the ratio of the width to the height of a picture, document, or scanning field.
| Technical English by wpv |
ASPECT RATIO
The ratio of the length to the width, of a rectangular air grille or duct.
The ratio of the length to the width, of a rectangular air grille or duct.
Aspect Ratio Definition from Sports Dictionaries & Glossaries
| Glossary Of Windsurfing Terminology |
Aspect Ratio
A term borrowed from aerodynamics, and approximating to the length of the foil, wing or sail, divided by the width. A High Aspect Ratio sail, fin or daggerboard is tall and narrow - low aspect is short and squat.
A term borrowed from aerodynamics, and approximating to the length of the foil, wing or sail, divided by the width. A High Aspect Ratio sail, fin or daggerboard is tall and narrow - low aspect is short and squat.
Aspect Ratio Definition from Encyclopedia Dictionaries & Glossaries
| Wikipedia English - The Free Encyclopedia |
Aspect ratio
The aspect ratio of a two-dimensional shape is the ratio of its longer dimension to its shorter dimension. It is also applied to two characteristic dimensions of a three-dimensional shape, especially for the longest and shortest 'axes' or for symmetrical objects (e.g. rods) that are described by just two measures (e.g. length and diameter). In such cases, the aspect ratio may evaluate to a value less than one (e.g. consider very short and very long rods).
| See more at Wikipedia.org... |
Aspect ratio (image)
The aspect ratio of an image is its displayed width divided by its height (usually expressed as "x:y" or "x×y," with the joining colon or multiplication symbol articulated as the preposition "by" or sometimes "to").
Currently, the most common motion picture film ratios in use are 1.85:1 and 2.39:1. In video, the two standardized ratios are currently the traditional 4:3 (1.33:1), universal among standard definition video formats, and its modern 16:9 (1.78:1) successor, used in high-definition television and European digital television. Historically, many other aspect ratios no longer in general use have existed in both film and video. Conversion between formats with unequal ratios can be accomplished by either cropping the image to fit the receiving format's ratio or adding black bars (letterboxing or pillarboxing) to retain the original format's ratio. Film ratios tend to be formatted to end with ":1", while video ratios usually prefer to be denoted with whole numbers on both sides of the ratio.
| See more at Wikipedia.org... |