Density.
The optical density is the degree of blackening of film after exposure and processing. The blacker the area in question, the higher the density. Density is measured by the ability of the developed silver in the piece of film to stop light from passing through.

5楼: Originally posted by rockinuk at 2012-08-28 18:11:39
density 指密度~
对于一个 image 的密度~你做何解释?...

2楼: Originally posted by rockinuk at 2012-08-28 16:13:06
影像的分辨率~~也就是解析度~~
常用的计算单位是 DPI~
或是像素 pixel~

4楼: Originally posted by chentianyu1 at 2012-08-28 17:28:09
分辨率/解析度对应的英文是resolution，不是density...

6楼: Originally posted by rockinuk at 2012-08-28 18:14:32
Density of the image
http://www.studentfilmmakers.com/bb/showthread.php/4275-Density-of-the-image

Pixel density
http://en.wikipedia.org/wiki/Pixel_density

It actually means how dense the film is -- in b&w terms, how much black silver is on the piece of film, which affects how much light has to push through it. In color terms, it would the density of the resulting color coupler dye clouds remaining after the silver is removed.

7楼: Originally posted by chentianyu1 at 2012-08-28 18:25:50
你引用的第一个网页说的是我表达的意思。


下面那个维基百科的条目，说的是pixel density，而不是image density，前者直译过来是像素密度，跟图像没关系。...

3楼: Originally posted by chentianyu1 at 2012-08-28 17:26:43
2L完全错的啊。
Density Image基本可以理解为亮度（灰度）图。

http://www.dentallearning.org/course/fde0030/Imaging_terms.htm...