Image 获取图像的实际位深度
即使图像保存为16位文件，它通常也来自仅产生10或12位的相机。我希望能够检查图像文件的某些位（以及哪些位）是否始终为零 也就是说，摄像机产生Image 获取图像的实际位深度,image,bit,depth,16-bit,Image,Bit,Depth,16 Bit,即使图像保存为16位文件，它通常也来自仅产生10或12位的相机。我希望能够检查图像文件的某些位（以及哪些位）是否始终为零 也就是说，摄像机产生xxxxxxxxxxx，它被写为xxxxxxxxxxx或000xxxxxxxxxx 编辑：这里有4个文件作为示例，分别为8位、10位、12位和16位：您可以使用以下命令在shell中使用ImageMagick获取位深度： magick identify -format "%[bit-depth]" 12-bit_000000.dpx
xxxxxxxxxxxxxxxxxxxxxx000xxxxxxxxxx编辑：这里有4个文件作为示例，分别为8位、10位、12位和16位：您可以使用以下命令在shell中使用ImageMagick获取位深度：
magick identify -format "%[bit-depth]" 12-bit_000000.dpx
12
magick identify -format "%f: %[bit-depth]\n" *.dpx
10-bit_000000.dpx: 10
12-bit_000000.dpx: 12
16-bit_000000.dpx: 16
8-bit_000000.dpx: 8
您可以看到以下所有其他详细信息：
magick identify -verbose 12-bit_000000.dpx
magick 12-bit_000000.dpx txt:
identify -define identify:locate=maximum 12-bit_000000.dpx
Channel maximum locations:
Red: 37976.7 (0.579487) 1144,1311
Green: 36376.3 (0.555067) 1146,1311
Blue: 34808 (0.531136) 1146,1314
Image:
Filename: 12-bit_000000.dpx
Format: DPX (SMPTE 268M-2003 (DPX 2.0))
Class: DirectClass
Geometry: 2048x1536+0+0
Units: Undefined
Colorspace: sRGB
Type: TrueColor
Endianness: LSB
Depth: 12-bit
Channel depth:
Red: 12-bit
Green: 12-bit
Blue: 12-bit
Channel statistics:
Pixels: 3145728
Red:
min: 0 (0)
max: 2373 (0.579487)
mean: 502.223 (0.122643)
...
...
...
...
118,2: (6897.58,6977.6,8017.83) #1AF21B421F52 srgb(10.525%,10.6471%,12.2344%)
119,2: (6945.59,7121.63,8033.84) #1B221BD21F62 srgb(10.5983%,10.8669%,12.2589%)
120,2: (6769.55,7329.68,7921.81) #1A721CA21EF2 srgb(10.3297%,11.1844%,12.0879%)
121,2: (6465.48,7441.7,7825.79) #19411D121E92 srgb(9.86569%,11.3553%,11.9414%)
...
...
ExifTool Version Number : 12.00
File Name : 10-bit_000000.dpx
Directory : .
File Size : 12 MB
File Modification Date/Time : 2021:02:08 09:50:32+00:00
File Access Date/Time : 2021:02:08 09:59:45+00:00
File Inode Change Date/Time : 2021:02:08 09:50:32+00:00
File Permissions : rw-r--r--
File Type : DPX
File Type Extension : dpx
MIME Type : image/x-dpx
Byte Order : Little-endian
Header Version : V2.0
DPX File Size : 12584960
Ditto Key : New
Image File Name : 10-bit_000000.dpx
Create Date : 2021:02:01 10:45:32
Creator : flashSuite 2 3.4.5
Project : Colour test
Copyright : 2021
Encryption Key : ffffffff
Orientation : Horizontal (normal)
Image Elements : 1
Image Width : 2048
Image Height : 1536
Data Sign : Unsigned
Components Configuration : R, G, B
Bit Depth : 10 <--- HERE IT IS
Image Description :
Source File Name :
Source Create Date :
Input Device Name : SpinnerS
Input Device Serial Number : 5CFC3FE89CDB
Frame Rate : 16
Frame ID :
Slate Information :
User ID :
Image Size : 2048x1536
Megapixels : 3.1
您可以获得大量的十六进制像素转储，如下所示：
magick identify -verbose 12-bit_000000.dpx
magick 12-bit_000000.dpx txt:
identify -define identify:locate=maximum 12-bit_000000.dpx
Channel maximum locations:
Red: 37976.7 (0.579487) 1144,1311
Green: 36376.3 (0.555067) 1146,1311
Blue: 34808 (0.531136) 1146,1314
Image:
Filename: 12-bit_000000.dpx
Format: DPX (SMPTE 268M-2003 (DPX 2.0))
Class: DirectClass
Geometry: 2048x1536+0+0
Units: Undefined
Colorspace: sRGB
Type: TrueColor
Endianness: LSB
Depth: 12-bit
Channel depth:
Red: 12-bit
Green: 12-bit
Blue: 12-bit
Channel statistics:
Pixels: 3145728
Red:
min: 0 (0)
max: 2373 (0.579487)
mean: 502.223 (0.122643)
...
...
...
...
118,2: (6897.58,6977.6,8017.83) #1AF21B421F52 srgb(10.525%,10.6471%,12.2344%)
119,2: (6945.59,7121.63,8033.84) #1B221BD21F62 srgb(10.5983%,10.8669%,12.2589%)
120,2: (6769.55,7329.68,7921.81) #1A721CA21EF2 srgb(10.3297%,11.1844%,12.0879%)
121,2: (6465.48,7441.7,7825.79) #19411D121E92 srgb(9.86569%,11.3553%,11.9414%)
...
...
ExifTool Version Number : 12.00
File Name : 10-bit_000000.dpx
Directory : .
File Size : 12 MB
File Modification Date/Time : 2021:02:08 09:50:32+00:00
File Access Date/Time : 2021:02:08 09:59:45+00:00
File Inode Change Date/Time : 2021:02:08 09:50:32+00:00
File Permissions : rw-r--r--
File Type : DPX
File Type Extension : dpx
MIME Type : image/x-dpx
Byte Order : Little-endian
Header Version : V2.0
DPX File Size : 12584960
Ditto Key : New
Image File Name : 10-bit_000000.dpx
Create Date : 2021:02:01 10:45:32
Creator : flashSuite 2 3.4.5
Project : Colour test
Copyright : 2021
Encryption Key : ffffffff
Orientation : Horizontal (normal)
Image Elements : 1
Image Width : 2048
Image Height : 1536
Data Sign : Unsigned
Components Configuration : R, G, B
Bit Depth : 10 <--- HERE IT IS
Image Description :
Source File Name :
Source Create Date :
Input Device Name : SpinnerS
Input Device Serial Number : 5CFC3FE89CDB
Frame Rate : 16
Frame ID :
Slate Information :
User ID :
Image Size : 2048x1536
Megapixels : 3.1
您可以找到如下最亮的像素：
magick identify -verbose 12-bit_000000.dpx
magick 12-bit_000000.dpx txt:
identify -define identify:locate=maximum 12-bit_000000.dpx
Channel maximum locations:
Red: 37976.7 (0.579487) 1144,1311
Green: 36376.3 (0.555067) 1146,1311
Blue: 34808 (0.531136) 1146,1314
magick 12-bit_000000.dpx -crop 4x4+1144+1311 txt:
# ImageMagick pixel enumeration: 4,4,65535,srgb
0,0: (37976.7,36040.2,34407.9) #94598CC88668 srgb(57.9487%,54.9939%,52.5031%)
1,0: (37672.6,36248.3,34455.9) #93298D988698 srgb(57.4847%,55.3114%,52.5763%)
2,0: (37208.5,36376.3,34407.9) #91598E188668 srgb(56.7766%,55.5067%,52.5031%)
3,0: (36808.4,36088.3,34055.8) #8FC88CF88508 srgb(56.1661%,55.0672%,51.9658%)
0,1: (37880.7,35704.2,34055.8) #93F98B788508 srgb(57.8022%,54.4811%,51.9658%)
1,1: (37544.6,36040.2,34151.8) #92A98CC88568 srgb(57.2894%,54.9939%,52.1123%)
2,1: (37416.6,36360.3,34407.9) #92298E088668 srgb(57.094%,55.4823%,52.5031%)
3,1: (37096.5,35992.2,34055.8) #90E88C988508 srgb(56.6056%,54.9206%,51.9658%)
0,2: (37768.6,35592.1,33991.8) #93898B0884C8 srgb(57.6313%,54.3101%,51.8681%)
1,2: (37544.6,35960.2,34183.8) #92A98C788588 srgb(57.2894%,54.8718%,52.1612%)
2,2: (37528.6,35992.2,34487.9) #92998C9886B8 srgb(57.265%,54.9206%,52.6252%)
3,2: (37464.6,35560.1,34279.8) #92598AE885E8 srgb(57.1673%,54.2613%,52.3077%)
0,3: (37560.6,35624.2,34263.8) #92B98B2885D8 srgb(57.3138%,54.359%,52.2833%)
1,3: (37336.5,35816.2,34519.9) #91D98BE886D8 srgb(56.9719%,54.652%,52.674%)
2,3: (37544.6,35640.2,34808) #92A98B3887F8 srgb(57.2894%,54.3834%,53.1136%)
3,3: (37688.6,34968,34439.9) #933988988688 srgb(57.5092%,53.3578%,52.5519%)
8调用了到ImageMagick的Python绑定
另一个选项是
exiftoolexiftool 10-bit_000000.dpx
Image:
Filename: 12-bit_000000.dpx
Format: DPX (SMPTE 268M-2003 (DPX 2.0))
Class: DirectClass
Geometry: 2048x1536+0+0
Units: Undefined
Colorspace: sRGB
Type: TrueColor
Endianness: LSB
Depth: 12-bit
Channel depth:
Red: 12-bit
Green: 12-bit
Blue: 12-bit
Channel statistics:
Pixels: 3145728
Red:
min: 0 (0)
max: 2373 (0.579487)
mean: 502.223 (0.122643)
...
...
...
...
118,2: (6897.58,6977.6,8017.83) #1AF21B421F52 srgb(10.525%,10.6471%,12.2344%)
119,2: (6945.59,7121.63,8033.84) #1B221BD21F62 srgb(10.5983%,10.8669%,12.2589%)
120,2: (6769.55,7329.68,7921.81) #1A721CA21EF2 srgb(10.3297%,11.1844%,12.0879%)
121,2: (6465.48,7441.7,7825.79) #19411D121E92 srgb(9.86569%,11.3553%,11.9414%)
...
...
ExifTool Version Number : 12.00
File Name : 10-bit_000000.dpx
Directory : .
File Size : 12 MB
File Modification Date/Time : 2021:02:08 09:50:32+00:00
File Access Date/Time : 2021:02:08 09:59:45+00:00
File Inode Change Date/Time : 2021:02:08 09:50:32+00:00
File Permissions : rw-r--r--
File Type : DPX
File Type Extension : dpx
MIME Type : image/x-dpx
Byte Order : Little-endian
Header Version : V2.0
DPX File Size : 12584960
Ditto Key : New
Image File Name : 10-bit_000000.dpx
Create Date : 2021:02:01 10:45:32
Creator : flashSuite 2 3.4.5
Project : Colour test
Copyright : 2021
Encryption Key : ffffffff
Orientation : Horizontal (normal)
Image Elements : 1
Image Width : 2048
Image Height : 1536
Data Sign : Unsigned
Components Configuration : R, G, B
Bit Depth : 10 <--- HERE IT IS
Image Description :
Source File Name :
Source Create Date :
Input Device Name : SpinnerS
Input Device Serial Number : 5CFC3FE89CDB
Frame Rate : 16
Frame ID :
Slate Information :
User ID :
Image Size : 2048x1536
Megapixels : 3.1
ExifTool版本号：12.00
文件名：10位_000000.dpx
目录：。
文件大小：12 MB
文件修改日期/时间：2021:02:08 09:50:32+00:00
文件访问日期/时间：2021:02:08 09:59:45+00:00
文件索引节点更改日期/时间：2021:02:08 09:50:32+00:00
文件权限：rw-r--r--
文件类型：DPX
文件扩展名：dpx
MIME类型：image/x-dpx
字节顺序：小端
标题版本：V2.0
DPX文件大小：12584960
同上键：新
图像文件名：10位_000000.dpx
创建日期：2021:02:01 10:45:32
创建者：flashSuite 2 3.4.5
项目：颜色测试
版权所有：2021
加密密钥：ffffffff
方向：水平（正常）
图像元素：1
图像宽度：2048
图像高度：1536
数据符号：无符号
组件配置：R、G、B
位深度：10可能会共享这样的图像（通过Dropbox或Google Drive），这样我们就可以看到您实际拥有的图像。这对于jpg等有损文件格式来说可能很困难。这种格式的色度子采样和插值可以引入像XXYYY
这样的颜色，即使传感器只能创建XX000
。你们有什么格式？另外，您计划使用什么编程语言？您已经尝试了什么？谢谢，Mark/Socowi。在本例中，它是一个未压缩的.dpx文件。明天我回到办公室后可以上传。我用4.dpx示例的下载链接更新了原始帖子。谢谢。非常感谢你，马克。这非常有帮助。很高兴它对你有用-祝你的项目好运。如果你陷入困境，回来问更多的问题-问题是免费的，答案也是免费的：-）