ImageGear .NET v25.2 - Updated
ImageGear.Twain Assembly / ImageGear.TWAIN Namespace / ImGearJPEGQuality Enumeration




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    ImGearJPEGQuality Enumeration
    In This Topic
    This enumeration specifies the kind of JPEG quantization tables that tradeoff quality versus compressed image size.
    Syntax
    'Declaration
     
    Public Enum ImGearJPEGQuality 
       Inherits System.Enum
    'Usage
     
    Dim instance As ImGearJPEGQuality
    public enum ImGearJPEGQuality : System.Enum 
    __value public enum ImGearJPEGQuality : public System.Enum 
    public enum class ImGearJPEGQuality : public System.Enum 
    Members
    MemberValueDescription
    HIGH-1Write-only; implies high quality; the images display the maximum quality that produces any kind of meaningful compression. Note that images at this setting are still considered to be lossy.
    LOW-3Write-only; implies low quality; the images are at the maximum compression recommended by the Source.
    MEDIUM-2Write-only; implies medium quality; the images are at the balance point between good compression and good images. This is an arbitrary setting on the part of the Source writer that is expected to best represent their device. This is the value that Applications are most encouraged to use.
    UNKNOWN-4Read-only; must be the setting for this capability if the user sets the JPEG compression tables using DAT_JPEGCOMPRESSION, and the Source is not able to map theselected tables to a specific percentage of quality.
    Remarks
    ImGearCapabilities.ICAP_JPEGQUALITY capability values.
    Inheritance Hierarchy

    System.Object
       System.ValueType
          System.Enum
             ImageGear.TWAIN.ImGearJPEGQuality

    See Also