PictureEffectsConsole Xojo Plugin |
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ContrastStretchEffectConsole Class (console only)
A class to do contrast stretch effect.

Normalization is a process that changes the range of pixel intensity values. Applications include photographs with poor contrast due to glare, for example. Normalization is sometimes called contrast stretching.
This class supports use of multiple CPU cores.
MapEffectConsole
ContrastStretchEffectConsole
Properties
Mask (console only) | Sets mask for the operation of the simple version of the Apply functions. |
CPUCoreCount (Inherited) (console only) | Returns number of detected CPU cores on the running machine. |
ErrorCode (Inherited) (console only) | Returns error code after applying the effect. This value is a Constant defined in the PictureEffectsError module. |
MultiprocessingHint (Inherited) (console only) | Use this property to fine tune CPU usage for this algorithm. By default this property is set to zero (Automatic). This property accepts all constants that are defined in this class. |
ProgressHandler (Inherited) (console only) | Use this property to use a progress class to get progress feedback from this function. This class must be a class that Implements the IProgressHandler Interface which is defined in this plugin. |
Methods
Apply (console only) | Applies the effect on a given 32 bit source image with a given 32 bit mask and returns the result to a new image. |
Apply (console only) | Applies the effect on a given 32 bit source image with parameters that have been set on the class instance. |
Apply (Inherited) (console only) | Applies the effect on a given source image with a given mask. |
ApplyInPlace (console only) | Applies the effect in place on a given 32 bit source image with a given 32 bit mask. |
ApplyInPlace (console only) | Applies the effect in place on a given 32 bit source image with parameters that have been set on the class instance. |
ApplyInPlace (Inherited) (console only) | Applies the effect on a given source image with a given mask without creating a new image, the result is written into the source image. Very Important read the remarks. |
Constants
CPU_USE_MACHINE_CORE_COUNT = -1 (Inherited) | Uses exactly the number of available CPU cores in the machine. (Available here means on-line CPU cores, some laptops can put CPU cores off line in low battery situations) |
CPU_USE_AUTOMATIC = 0 (Inherited) | Takes into account number of available CPU cores on the Machine and also tries to select the fastest way based on developer rating for each algorithm and picture size. (In simple algorithms then the fastest path is sometimes 2 or 3 CPU cores and not 4 CPU cores because of the overhead of managing multiple cores). In more complex algorithms then 3 or 4 cores are almost always faster than 2 cores. |
CPU_USE_1_CORE = 1 (Inherited) | Uses one CPU core. |
CPU_USE_2_CORES = 2 (Inherited) | Uses two CPU cores.
This setting will also work on machines with less than two CPU cores, but it will be slower or best case same speed as using the correct setting for such machine. |
CPU_USE_3_CORES = 3 (Inherited) | Uses three CPU cores.
This setting will also work on machines with less than three CPU cores, but it will be slower or best case same speed as using the correct setting for such machine. |
CPU_USE_4_CORES = 4 (Inherited) | Uses four CPU cores.
This setting will also work on machines with less than four CPU cores, but it will be slower or best case same speed as using the correct setting for such machine. |
CPU_USE_5_CORES = 5 (Inherited) | Uses five CPU cores.
This setting will also work on machines with less than four CPU cores, but it will be slower or best case same speed as using the correct setting for such machine. |
CPU_USE_6_CORES = 6 (Inherited) | Uses six CPU cores.
This setting will also work on machines with less than four CPU cores, but it will be slower or best case same speed as using the correct setting for such machine. |
CPU_USE_7_CORES = 7 (Inherited) | Uses seven CPU cores.
This setting will also work on machines with less than four CPU cores, but it will be slower or best case same speed as using the correct setting for such machine. |
CPU_USE_8_CORES = 8 (Inherited) | Uses eight CPU cores.
This setting will also work on machines with less than four CPU cores, but it will be slower or best case same speed as using the correct setting for such machine. |
Supported Platforms:
MacOS X CarbonMacOS X CocoaWin32 - WindowsLinux x86Unsupported Platforms: