saving an image using 'imwrite'

1 次查看（过去 30 天）
Harry
Harry 2013-7-5
I'm trying to save an grayscale image to a file using
imagesc(Nv)
imwrite(Nv,'C:\Users\bostock_h\Documents\Images\chargemap.jpg')
but for some reason this just creates a file which is just white with the wrong dimensions. But I know 'Nv' is fine because the 'imagesc' brings up the image in MATLAB and it is correct.

请先登录，再回答此问题。

采纳的回答

Walter Roberson
Walter Roberson 2013-7-5
imagesc() automatically scales data so that the minimum value maps to the first color and the maximum value maps to the last color. If your data does not happen to be in the range 0 to 1 for floating point values, or 0 to 255 for uint8, or 0 to 65535 for uint16, then the image that imwrite() creates is not going to be the image you want.

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Images 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by