基本TIFF TAGS
本頁主要摘自 http://www.awaresystems.be/imaging/tiff/tifftags/baseline.html。每一個TAG均有原始鏈接，可以點擊查看詳細的描述。
這些基本Tag是所有TIFF編解碼器必須支持的Tag
| 碼 | 名稱 | 簡短描述 | |
|---|---|---|---|
| 十進制碼 | 十六進制 | ||
| 254 | 00FE | NewSubfileType |
新的子文件類型標識 LONG 長度爲1 用比特來標識圖像的類型 Bit0如果是1代表縮略圖 Bit1如果是1代表多頁圖像中的某一頁 Bit2如果是1代表它是透明度掩碼圖像 其餘的位數暫時沒有定義。與SubfileType的是，此Tag用比特位來區分文件類型而不是用值來區分 |
| 255 | 00FF | SubfileType |
子文件類型標識 SHORT 長度爲1 1 全分辨率圖像 2 縮小分辨率的圖像 3 多頁圖像的某一頁 過時的Tag，已不再使用。 |
| 256 | 0100 | ImageWidth |
圖像寬度 SHORT或者LONG 長度爲1 |
| 257 | 0101 | ImageLength | 圖像高度 SHORT或者LONG 長度爲1 |
| 258 | 0102 | BitsPerSample |
每個分量的Bit數 SHORT 長度爲SamplesPerPixel |
| 259 | 0103 | Compression |
壓縮類型 SHORT 長度爲1 隨着TIFF的不斷擴張，目前支持多達幾十種的壓縮方式。就我個人看來，最需要關注的有以下兩個值： Compression＝1： 沒有壓縮 Compression＝7：JPEG壓縮。 如果是RGB圖像並且SamplesPerPixel＝3，則是標準的有損JPEG壓縮。如果是CFA圖像，則是Lossless JPEG |
| 262 | 0106 | PhotometricInterpretation |
顏色空間 SHORT 長度爲1 0 = WhiteIsZero. 應用於灰度或者二值圖像， 0對應最亮灰度. 32803 = CFA (Color Filter Array) |
| 263 | 0107 | Threshholding | 定義了轉換成二值圖像的閾值，忽略之 |
| 264 | 0108 | CellWidth | The width of the dithering or halftoning matrix used to create a dithered or halftoned bilevel file. |
| 265 | 0109 | CellLength | The length of the dithering or halftoning matrix used to create a dithered or halftoned bilevel file. |
| 266 | 010A | FillOrder | 在同一字節中的邏輯順序。一般不做定義，要定義的話建議用1 |
| 270 | 010E | ImageDescription | 字符串， 對圖像的描述 |
| 271 | 010F | Make | 字符串， 生產廠商的描述 |
| 272 | 0110 | Model | 字符串 |
| 273 | 0111 | StripOffsets |
每個Strip的偏移量 SHORT或者LONG N = StripsPerImage for PlanarConfiguration equal to 1; N = SamplesPerPixel * StripsPerImage for PlanarConfiguration equal to 2 |
| 274 | 0112 | Orientation | The orientation of the image with respect to the rows and columns. |
| 277 | 0115 | SamplesPerPixel | 每個象素的通道數 SHORT 長度爲1 |
| 278 | 0116 | RowsPerStrip |
每個Strip有多少行 SHORT或者LONG 長度爲1。Default是無限大 StripsPerImage = floor ((ImageLength + RowsPerStrip - 1) / RowsPerStrip). |
| 279 | 0117 | StripByteCounts |
每個Strip的長度 SHORT或者LONG N = StripsPerImage for PlanarConfiguration equal to 1; N = SamplesPerPixel * StripsPerImage for PlanarConfiguration equal to 2 |
| 280 | 0118 | MinSampleValue | The minimum component value used. |
| 281 | 0119 | MaxSampleValue | The maximum component value used. |
| 282 | 011A | XResolution | The number of pixels per ResolutionUnit in the ImageWidth direction. |
| 283 | 011B | YResolution | The number of pixels per ResolutionUnit in the ImageLength direction. |
| 284 | 011C | PlanarConfiguration | How the components of each pixel are stored. |
| 288 | 0120 | FreeOffsets | For each string of contiguous unused bytes in a TIFF file, the byte offset of the string. |
| 289 | 0121 | FreeByteCounts | For each string of contiguous unused bytes in a TIFF file, the number of bytes in the string. |
| 290 | 0122 | GrayResponseUnit | The precision of the information contained in the GrayResponseCurve. |
| 291 | 0123 | GrayResponseCurve | For grayscale data, the optical density of each possible pixel value. |
| 296 | 0128 | ResolutionUnit | The unit of measurement for XResolution and YResolution. |
| 305 | 0131 | Software | Name and version number of the software package(s) used to create the image. |
| 306 | 0132 | DateTime | Date and time of image creation. |
| 315 | 013B | Artist | Person who created the image. |
| 316 | 013C | HostComputer | The computer and/or operating system in use at the time of image creation. |
| 320 | 0140 | ColorMap | 調色板 |
| 338 | 0152 | ExtraSamples | Description of extra components. |
| 33432 | 8298 | Copyright | Copyright notice. |