Instructions for use
Bit depth conversion is used to adjust the bit depth of imagery, such as converting 16-bit unsigned imagery to 8-bit unsigned imagery.
A bit is the smallest unit in computer memory, used to record the color value of each pixel. The more colors an image has, the more bits are required. The number of bits used per pixel in a computer is referred to as bit depth.
SuperMap iDesktopX 2025 Update1 version and later support this feature.
Function Entry
- Toolbox->Imagery->Basic tools->Bit Depth Conversion.
- Start tab->Common Imagery Tools group->Bit Depth Conversion.
Parameter description
Parameter Name | Parameter Interpretation | Parameter Type |
Image file list |
Use Add Image, Select All, Select Reverse, and Delete functions via the Image file list to manage image files.
|
DatasetImage |
Pixel format | Set the pixel bit depth for the output channels after processing. Available options include:
|
PixelFormat |
Stretch method |
Set the method for image stretching. Default is Percent Clip. Other options include Gaussian, Gamma, Histogram Equalization, and Logarithmic stretch. For more information on methods, please refer to Image Stretching Methods. |
ImageStretchingType |
Minimum Value | Available when Stretch method is set to Percent Clip. Default value is 1. | Double |
Maximum Value | Available when Stretch method is set to Percent Clip. Default value is 99. | Double |
Gaussian standard deviation coefficient | Available when Stretch method is set to Gaussian. Default value is 3. | Integer |
Gamma coefficient | Available when Stretch method is set to Gamma. Default value is 0.5. | Double |
NoData Value | Set the value for the no-data areas in the image. Default is 0. | Double |
Index | Set the index to be exported, corresponding to the order and band values. | Boolean |
Output directory | Set the storage path for the result image. | String |
File type | Set the storage type for the result image. Options include Not Set, Tiff/GeoTIFF, Erdas Image, and PCIDSK. Default is Tiff/GeoTIFF. Selecting Not Set means the output will use the original storage type of the image. | FileType |
Compression method | Set the compression method for the output image. Available only when the output format is Tiff/GeoTIFF. Default is NONE. | CompressMethod |
Output Result
The image data after bit depth conversion processing.
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