Matlab下imwrite，Uint16的深度图像
1. 在Matlab命令窗口输入命令：
help imwrite
会有如下解释：
-
If the input array is of class uint16 and the format supports 16-bit data (JPEG, PNG, and TIFF), imwrite outputs the data as 16-bit values. If the format does not support 16-bit values, imwrite issues an error. Several formats, such as JPEG and PNG, support a parameter that lets you specify the bitdepth of the output data.
-
If the input array is of class double, and the image is a grayscale or RGB color image, imwrite assumes the dynamic range is [0,1] and automatically scales the data by 255 before writing it to the file as 8-bit values.
2. 如果你要保存成uint16的图像的矩阵数据是非uint16的类型：
则必须先将double类型转换为uint16的类型，执行命令：
data11=uint16(data1);
结果如下：
3. 然后执行命令：
imwrite(data11,'image.png','png','bitdepth',16);
最终得到uint16的灰度图像image.png。如下图所示：
