Talk:Truevision TGA

From Wikipedia, the free encyclopedia

Does this format have any patent complications? --I am not good at running 06:37, 25 May 2005 (UTC)

No, the only supported compression technique is RLE, which is not patent encumbered. -- Kaszeta 7 July 2005 20:09 (UTC)

Which programmes can be used a) to view TGA images correctly and b) to convert a TGA file into a JPEG? --Hotblack 25 December 2005 14:12 (UTC)

Lots of programs. ImageMagick, for one. -- Kaszeta 17:08, 25 December 2005 (UTC)

What does this mean: "Despite its limited colour-depth" ?! TGA supports 32 bits per pixel. What more could you want? 48 bit color? I just don't understand this line! —The preceding unsigned comment was added by 82.147.150.131 (talk • contribs) 00:00, 21 September 2006 (UTC)

I agree with the above. Also, what's the __ character in this sentence?
The format can store image data with 1__32 bits of precision per pixel.
The format can store image data with 1�32 bits of precision per pixel.
To me, it looks like a question mark. What text encoding is it supposed to be? Can someone who can see it change it to Unicode?
—Dan 19:33, 29 October 2006 (UTC)
I think it was just a corrupted en dash; I've fixed it. 32 bits per pixel is only 8 bits per channel (red, green, blue and alpha), which is not enough for high-end image editing. --Zundark 19:52, 29 October 2006 (UTC)
Sweet, thanks for fixing that (and for explaining the color depth issue). —Dan 20:49, 29 October 2006 (UTC)

I read the tga 2.0 spec and nowhere does it say that it is limited to 32 bit depth. Where did you get this information? I don't see anything that would prevent the creation of 48 bit depth images: the pixel depth field is 1 byte long... As for 64 bit, I can see the limitation because the attribute depth is only four bits long, so the max would be 15 (which wouldn't make any sense), is this right? (I have added a Citation Needed where appropriate) -- j--f 13:43, 23 November 2007 (UTC)

Contents

[edit] Some minor modifications

Hello, I did some improvements to the article, clarifing the uses of the TGA image forma file.Ricardo Cancho Niemietz 16:55, 1 March 2007 (UTC)

[edit] TGA programs needed?

The article has begun discussing programs which save images in tga format. I think it would be nice too if someone adds links to good freeware tools for viewing/manipulating/converting TGA files. I found Image Magick too difficult for unexperienced users and it is almost impossible to find a nice freeware Windows program for converting TGA. --Lefter 08:46, 4 October 2007 (UTC)

See Image viewer, Comparison of image viewers. I personally use IrfanView because it's freeware, easy to use and fast. --62.224.119.115 23:02, 3 November 2007 (UTC)

[edit] The list?

Does anyone else doubt the necessity of mentioning, as separate entries of the list, games that use TGA to save screenshots? As TGA is one of the most common image formats for that, I think those could be, in the name of efficiency, replaced by a line stating "Many (pc?) games use the TGA format for saving screenshots, including (a few examples here)" As could be guessed by reading the list, TGA is also probably the most common format for textures in game engines. However, the list as it stands is already quite long in contrast to the article, and if fans of every game out there keep adding entries like this, it's going to keep growing. -- D64 (talk) 19:20, 29 January 2008 (UTC)

I was thinking the exact same thing. --Boompiee (talk) 19:26, 25 February 2008 (UTC)

Whether it's necessary or not, I just put the information into a table so it's easier to read. - Keng - t | c - 23:00, 22 May 2008 (UTC)

[edit] Seriously flawed

To claim that one 24bit file format somehow has an inferior color bit depth to another 24 bit format where both are linear and integer based, is flawed. There is no difference between 24bit tiff and 24bit tga, especially not the way it is presented in this article. Actually TGA is 32bit format, where 8 bits are reserved for alpha channel so if anything, TGA is superior to TIFF of older days when it didn't support alpha. Today, tiff can be anything which means it's quality is better if we are taking about 16bit tiffs which support 16 bits per channel, giving 48bit color.

It is also strange that the article gives an impression that tga is somehow better suited for tv work because of TV resolution... as if TGA comes standard in TV resolution or something along those lines. The article also states that high-end pre-press requires more quality then TV where the exact opposite is true: contrast ratio of a printed image can be easily covered with a lower bit depth image, and TV images, especially HD, require higher bit depth due to their wider tonal range.

Someone with better understanding of image file formats needs to rewrite this. —Preceding unsigned comment added by 66.171.216.248 (talk) 23:52, 9 March 2008 (UTC)