Allows the user to set how image files will be saved for a given type.
Image Admin control
object.SetSystemFileAttributes PageType, FileType, CompressionType, CompressionInfo
Parameter | Data Type | Description |
PageType | Integer | Specifies a page type value. |
FileType | Integer | Specifies a file type value. |
CompressionType | Integer | Specifies compression information. |
CompressionInfo | Long | Specifies compression information. |
Setting | Description |
0 | Unknown |
1 | Black and white |
2 | 4-bit gray scale |
3 | 8-bit gray scale |
4 | 4-bit palettized |
5 | 8-bit palettized |
6 | 24-bit RGB |
7 | 24-bit BGR |
Setting | Description |
0 | Unknown |
1 | TIFF |
2 | AWD |
3 | Bitmap (BMP) |
4 | PCX |
5 | DCX |
6 | JPEG |
Setting | Description |
0 | Unknown |
1 | No compression |
2 | Group 3 1D FAX |
3 | Group 3 Modified Huffman |
4 | Packed Bits |
5 | Group 4 2D FAX |
6 | JPEG |
7 | RBA |
8 | Group 3 2D FAX |
9 | LZW |
Setting | Description |
1 | EOL -- include or expect standard end of line bit sequences |
2 | Packed lines -- data is not byte aligned |
4 | Prefixed EOLs -- include or expect prefixed end of line bit sequences |
8 | Compressed bit order, left to right |
16 | Expanded bit order, left to right |
32 | Negate -- reverses black and white on expansion |
64 | High compression, high quality |
128 | High compression, medium quality |
256 | High compression, low quality |
512 | Medium compression, high quality |
1024 | Medium compression, medium quality |
2048 | Medium compression, low quality |
4096 | Low compression, high quality |
8192 | Low compression, medium quality |
16384 | Low compression, low quality |
These settings will be used when scanning files with the Image Scan control.
Defaults are set for a classification of the page type into one of three categories:
If a compression option of 0 (zero) is specified for a JPEG compression type, then a default value will be used (4096 -- low compression, high quality).
Compression topics in Imaging Concepts
File types in Imaging Concepts
Image types in Imaging Concepts
GetSysCompressionType method
GetSysFileType method
GetSysCompressionInfo method