1,492
edits
Difference between revisions of "Post Processing and Effects"
Post Processing and Effects (view source)
Revision as of 14:23, 31 August 2023
, 14:23, 31 August 2023→Adding transparency
Andrei.boiu (talk | contribs) |
Andrei.boiu (talk | contribs) |
||
| Line 33: | Line 33: | ||
The final result of the process is an original image layer that has a cutout, where all the image information that stands beyond this edge is marked specifically as having no content. This resulting image cannot be used as is, since the format used by the program is different than the one of your publishing medium. To achieve usable image files you need to export this picture into a format that holds transparency information, or the so-called alpha-channel. A common, modern format is PNG, that also offers slightly smaller files, without affecting image quality. Subsequent editing while maintaining the PNG format also has the additional advantage of portability beyond accuracy, as all the original information is well retained and possible to edit in just about any software. Exporting is quite well managed by most software information, being assumed that your image should contain all your original layers. In case this option is not well considered by default, you can specify it when asked by the program. | The final result of the process is an original image layer that has a cutout, where all the image information that stands beyond this edge is marked specifically as having no content. This resulting image cannot be used as is, since the format used by the program is different than the one of your publishing medium. To achieve usable image files you need to export this picture into a format that holds transparency information, or the so-called alpha-channel. A common, modern format is PNG, that also offers slightly smaller files, without affecting image quality. Subsequent editing while maintaining the PNG format also has the additional advantage of portability beyond accuracy, as all the original information is well retained and possible to edit in just about any software. Exporting is quite well managed by most software information, being assumed that your image should contain all your original layers. In case this option is not well considered by default, you can specify it when asked by the program. | ||
The final result of your work must be exported from the image editor in a format that can store transparency information, such as PNG, Targa and others. These file formats can store the properties of every individual pixel, including the transparency, hold in a special data format, commonly known as the Alpha channel. This is in contrast to typical image storage formats that have only the Red, Green, Blue, or RGB data stored. Keep in mind that editing file formats that have transparency requires compatible applications or web platforms to preserve this information. Most simple editors such as Microsoft Paint, will discard such infomation, leaving you with a file that no longer is able to make use of transparency. Most web platforms such as web sites content management systems, on-line shops, social media sites, can and do use transparency, if your file holds such information. Seeing what kind of information is stored and if your image has transparency can most reliably be determined in advanced image editing programs. | |||
<code>''Adding transparency, in most situations, means editing a standard image and specifying how each pixel's transparency is specified. Note that only certain image formats may hold a so-called Alpha channel information, JPEG cannot do this while PNG can.''</code> | |||
==Chroma Keying== | ==Chroma Keying== | ||