Wikipedia:Politica pro le uso de imagines

De Wikipedia, le encyclopedia libere

Pro multimedia in general (imagines, files de sono, etc.) vide Wikipedia:Multimedia. Pro cargar un imagine, visita Special:Upload. Altere functiones special se trova in Special:Specialpages.

Tabula de contento 1 Lineas-guida 2 Derecto de autor 3 Redaction de imagines 4 Deletion de imagines 5 Titulos de imagines 6 Placiamento 6.1 Montage de photos 7 Formato 8 Grandor 8.1 Redimensionamento 9 Chronologia de revision de articulos con imagines 10 Programmas recommendate 11 Cerca le imagines de Wikipedia in Interlingua capturate in le cache de Google 12 Related topics

[modificar] Lineas-guida

Ecce un lista de regulas pro le uso de imagines. Post le lista se trova un discussion plus detaliate explicante le rationamento detra le regulas. Vide tamben Wikipedia:Adjuta a sono pro informationes concernente le carga e ascolta de files de sono.

1. Respecta le copyrights quando tu carga imagines.
2. Describe in le pagina de description de imagines de cata imagine le contento e le situation concernente le copyrights.
3. Usa un titulo clar e detaliate. Nota que un imagine existente essera reimplaciate si tu carga un altere imagine con le mesme titulo.
4. Le largor ideal de imagines es 300 pixels (isto sembla convenir al resolutiones de schermo in uso general) ma si tu ha un imagine minus grande, usque al largor de 100-150 pixels, usa lo.
5. Imagines monstrate in un articulo debe idealmente esser minus grande que 35.000 bytes (si un imagine plus grande es necessari, 70.000 bytes pote esser acceptabile). Nota que un imagine de 35.000 bytes se discarga in 5 secundas per un modem de 56 kilobits per secunda.
6. Redige le imagines assi que illos monstra solmente le thema relevante.
7. Si tu crea un imagine con texto, per favor carga anque un version sin texto. Isto essera de adjuta pro Wikipedias in altere linguas a traducer los.
8. Non pone le information super autores e copyright in le imagines o articulos mesme; pone los in le pagina de description.
9. Usa le formato JPEG (= JPG) pro imagines photographic, e PNG pro icones, designos, mappas, bandieras, e tal cosas.
10. Adde un bon texto alternative pro imagines.

In le pagina anglophone meta:Image pages es discutite possibile meliorationes al software de Wikipedia que simplificarea multo de isto in le futuro.

[modificar] Derecto de autor

Please note: this is not the official copyright policy - merely a reminder and additional tips

When you upload an image, make sure you own the image, or that it is in the public domain, or that the copyright holder has agreed to license it under the GFDL. Please note its copyright status on the image description page.

Under United States copyright law, all images that were published before January 1, 1923 in the United States are now in the public domain, but this does not apply to images that were created prior to 1923 and published in 1923 or later. The year 1923 has special significance and this date does not roll forward in 2004. This is particularly significant because wikipedia pages, including the non-English language pages, are currently hosted on a server in the United States. However, the interaction of Wikipedia, the GFDL, and international law is still under discussion.

You can find a large selection of places to acquire public domain photos at the public domain image resources.

It is not the job of rank-and-file Wikipedians to police every image for possible copyright infringement. However, if you strongly suspect that an image is a copyright infringement (for example, if there is no information on copyright status on its image description page and you have seen it elsewhere under a copyright notice), then you might list it for deletion (see below).

See also:

• Wikipedia:Copyrights#Image_guidelines
• meta:avoid copyright paranoia.

[modificar] Redaction de imagines

To replace an image with an edited version, use the Upload file page, and make sure that your file has the same name as the one that you want to replace. Converting an image to another file format the (end of) the image name changes, hence one gets a separate image description page.

[modificar] Deletion de imagines

1. Drop a line to the person who uploaded the image, telling them of your concerns. You may be able to resolve the issue at this point.
2. Remove all uses of the image from articles - make it an orphan
3. Add one of these notices to the image description page
   • copvios: add the copyright infringement notice for images from Wikipedia:votes for deletion/copyvio to the image description page:
   • otherwise: add the listed for deletion notice to the image description page.
4. List the image on one of these links:
   • copyvios: list the image on Wikipedia:votes for deletion/copyvio
   • otherwise: list the image on Wikipedia:votes for deletion
5. The image can then be deleted after a week in the normal way - see our deletion policy.

To actually delete an image after following the above procedure, you must be an administrator. To do so, go to the image description page and click the (del) link. Do not click the Delete this page link, as this will delete the image description page but leave the image intact. To delete the image talk page (if any), you can use the Delete this page link as usual. Deleted images cannot be undeleted! Therefore they are gone permanently unless someone happened to keep a backup.

[modificar] Titulos de imagines

Descriptive titles are also useful. A map of Africa could be called "Africa.png", but quite likely more maps of Africa will be useful in Wikipedia, so it is good to be more specific, e.g. "Africa political map.png". Check whether there are already maps of Africa in Wikipedia. Then decide whether your map should replace one (in each article that uses it) or be additional. In the first case give it exactly the same name, otherwise a suitable other name. Avoid special characters in filenames or excessively long filenames, though, as that might make it difficult for some users to download the files onto their machines. Note that names are case sensitive, Africa.PNG is considered different from Africa.png. For uniformity, lower case file name extensions are recommended.

You may use the same name in the case of a different image that replaces the old one, and also if you make an improved version of the same image - perhaps a scanned image that you scanned again with a better quality scanner, or you used a better way of reducing the original in scale - then upload it with the same title as the old one. This allows people to easily compare the two images, and avoids the need to delete images or change articles. However, this is not possible if the format is changed, since then at least the extension part of the name has to be changed.

Currently there is no easy way to rename an image - you have to just save it and re-upload it.

[modificar] Placiamento

See Wikipedia:Image markup for recommendations on the best markup to use.

[modificar] Montage de photos

There are four different approaches to photo montages that different wikipedians take. Different approaches may be suitable for different subjects, or it may be possible to set a standard. The options are:

1. Photos at bottom of article (Erotic art in Pompeii)
2. Photos on "images of" page (eg sheep, images of sheep)
3. Photos on an image description page (eg cattle)
4. No photo montages allowed - only include a limited number of relevant photos

No decision on photo montages has been made yet. Please discuss pros and cons of each option on the talk page.

Note that it is not recommended to use animated GIFs to display multiple photos. The method is not suitable for printing and also is not user friendly (users can not save individual images and have to wait before being able to view images while other images cycle round)

[modificar] Formato

• Drawings, icons, political maps, flags and other such images (basically those with large,simple,and continuous blocks of color) should be in PNG format.
• Photos and photo-like maps should be in JPEG format.
• Animations should be in animated GIF format.

In general, if you have a good image that is in the wrong format, convert it to the correct format before uploading. However, if you find a map, flag, etc in JPEG format, only convert it to PNG if this reduces the file size without causing artifacts. For further advice on converting JPEG to PNG, see Wikipedia:How to reduce colors for saving a JPEG as PNG.

Most of the maps on the CIA World Factbook website were coded as JPEG, but are now coded as GIF. To update these photos, download the GIF picture from the CIA factbook, recode it in PNG format, and upload it to wikipedia.

Try to avoid cropping or otherwise editing JPEGs too frequently--each edit creates more loss of quality. If you can find an original of a photograph in 16-bit or 24-bit PNG or TIFF, edit that, and save as JPEG before you upload.

Avoid images that mix photographic and iconic content. Though CSS makes it easy to use a PNG overlay on top of a JPEG image, the Wikipedia software does not allow such a technique. Thus, both parts must be in the same file, and either the quality of one part will suffer, or the file size will be unnecessarily large.

When uploading SVG images, upload both the SVG source and a rasterised version, and cross-link on the image description page. Direct SVG support is planned (see meta:SVG image support) but not yet implemented.

See also: Wikipedia:How to keep image file sizes as small as possible

[modificar] Grandor

There are many technical hints in this section that some people may not have the tools or expertise to deal with themselves. If, for example, you find a great image that needs to be cropped, resized, or recoded and you don't know how to do that, ask someone on the Village pump to do it for you.

Scale and crop images to a size appropriate for the article. Keep in mind that many readers are using 800x600 displays, and so images wider than 300-400 pixels may overwhelm the article. Larger images also take more time to download over slow links. Likewise, images smaller than 100 pixels wide may be difficult for users of larger displays to see. An optimum size for images with text flowing around them would be 300 pixels. Images without text on the side can be wider.

In terms of image file size, please also bear in mind that not everyone has a broadband internet connection. A considerable number of people have 56kbps modems or slower connections than that. Images stored in an article should generally be kept below 70,000 bytes in size, 35,000 bytes or smaller is even better. Larger images are okay to use as a link, but please warn people that the image is larger.

Of course image complexity is an important factor to consider when sizing images. Don't use tiny "thumbnail" images linked to a large image--use an image of the appropriate size; adding a link to a larger version (perhaps the original source) is fine as well, but don't upload the larger one unless it is really needed.

This scalebar is red from 0 to 100 pixels, yellow from 100 to 150, green from 150 to 250,
yellow again from 250 to 300 and red again from 300 to 400 pixels.

[modificar] Redimensionamento

When resizing large pictures to smaller ones:

• Crop out unimportant background.
• Please preserve the original aspect ratio, stretched images look non-proportional and confusing.
• Consider using an integer ratio such as 1:2 or 1:3, which may produce better results.
• Resize from the largest resolution available - if you have a 2048pixel version, work from that, not the 800pixel version uploaded.
• Consider file size as well as image size - sometimes a version with more pixels but fewer bytes is preferable.
• Consider using the most advanced resample filter (such as Lanczos, B-spline etc.) this will render the smaller image in the highest quality possible and will avoid artifacts such as aliasing or color reduction.
• When making a thumbnailed version to replace someone else's (presumably inferior) thumbnail, please keep the same name as the original.

[modificar] Chronologia de revision de articulos con imagines

Old versions of articles do not show corresponding old versions of images, but the latest ones, unless the file names of the images have changed.

[modificar] Programmas recommendate

These software packages have been recommended by wikipedians for use in image manipulation:

• The GIMP [1]
• ImageMagick
• PMView [2]
• GraphicConverter (for Mac OS 8-X)
• Irfanview, a multi-featured freeware tool, supports many image formats.

[modificar] Cerca le imagines de Wikipedia in Interlingua capturate in le cache de Google

Formato PNG Formato JPEG Formato GIF

[modificar] Related topics

• Wikipedia:Como facer graphicos
• Wikipedia:Imagines non local
• Wikipedia:Ressources pro imagines in le dominio public
• Wikipedia:Adjuta a sono
• m:MediaWiki User's Guide: Using redirects#Images linking to a page
• Avoid offensive images where they are not necessary as part of an encyclopedia