BMP Metadata Format Specification
The XML schema for the native image metadata format is as follows:<?xml version="1.0" encoding="UTF-8"?><!-- Schema for BMP native image metadata format. --><xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://javax.imageio.plugins" targetNamespace="http://javax.imageio.plugins"> <!-- Coordinates of a point in the CIE XYZ color space. --> <xsd:complexType name="XYZPoint"> <xsd:sequence> <xsd:element name="X" type="xsd:double"/> <xsd:element name="Y" type="xsd:double"/> <xsd:element name="Z" type="xsd:double"/> </xsd:sequence> </xsd:complexType> <!-- BMP Schema 1.0 root element. --> <xsd:element name="javax_imageio_bmp_1.0"> <xsd:complexType> <xsd:sequence> <!-- BMP version string --> <xsd:element name="BMPVersion" type="xsd:string"/> <!-- Bitmap width --> <xsd:element name="Width" type="xsd:unsignedInt"/> <!-- Bitmap height --> <xsd:element name="Height" type="xsd:unsignedInt"/> <!-- Number of bits per pixel --> <xsd:element name="BitsPerPixel" type="xsd:unsignedShort"/> <!-- Compression type --> <xsd:element name="Compression" type="xsd:unsignedInt" minOccurs="0"/> <!-- Image size in bytes --> <xsd:element name="ImageSize" type="xsd:unsignedInt" minOccurs="0"/> <!-- Resolution in pixels per unit distance --> <xsd:element name="PixelsPerMeter" minOccurs="0"> <xsd:complexType> <xsd:sequence> <xsd:element name="X" type="xsd:unsignedInt"/> <xsd:element name="Y" type="xsd:unsignedInt"/> </xsd:sequence> </xsd:complexType> </xsd:element> <!-- PixelsPerMeter --> <!-- Number of color indexes in the color table actually used --> <xsd:element name="ColorsUsed" type="xsd:unsignedInt" minOccurs="0"/> <!-- Number of color indexes considered important for display --> <xsd:element name="ColorsImportant" type="xsd:unsignedInt" minOccurs="0"/> <!-- Color masks; present for BI_BITFIELDS compression only --> <xsd:element name="Mask" minOccurs="0"> <xsd:complexType> <xsd:sequence> <xsd:element name="Red" type="xsd:unsignedInt"/> <xsd:element name="Green" type="xsd:unsignedInt"/> <xsd:element name="Blue" type="xsd:unsignedInt"/> <xsd:element name="Alpha" type="xsd:unsignedInt" minOccurs="0"/> </xsd:sequence> </xsd:complexType> </xsd:element> <!-- Color space --> <xsd:element name="ColorSpaceType" type="xsd:unsignedInt" minOccurs="0"/> <!-- CIE XYZ for the LCS_CALIBRATED_RGB color space --> <xsd:element name="CIEXYZEndpoints" minOccurs="0"> <xsd:complexType> <xsd:sequence> <xsd:element name="Red" type="XYZPoint"/> <xsd:element name="Green" type="XYZPoint"/> <xsd:element name="Blue" type="XYZPoint"/> </xsd:sequence> </xsd:complexType> </xsd:element> <!-- Gamma values for the LCS_CALIBRATED_RGB color space --> <xsd:element name="Gamma" minOccurs="0"> <xsd:complexType> <xsd:sequence> <xsd:element name="Red" type="xsd:unsignedInt"/> <xsd:element name="Green" type="xsd:unsignedInt"/> <xsd:element name="Blue" type="xsd:unsignedInt"/> </xsd:sequence> </xsd:complexType> </xsd:element> <!-- Rendering intent --> <xsd:element name="Intent" type="xsd:unsignedInt" minOccurs="0"/> <!-- The image colormap --> <xsd:element name="Palette" minOccurs="0"> <xsd:complexType> <xsd:sequence> <xsd:element name="PaletteEntry"> <xsd:complexType> <xsd:sequence> <xsd:element name="Red" type="xsd:unsignedByte"/> <xsd:element name="Green" type="xsd:unsignedByte"/> <xsd:element name="Blue" type="xsd:unsignedByte"/> <xsd:element name="Alpha" type="xsd:unsignedByte" minOccurs="0"/> </xsd:sequence> </xsd:complexType> </xsd:element> </xsd:sequence> </xsd:complexType> </xsd:element> </xsd:sequence> </xsd:complexType> </xsd:element> <!-- bmp_image_1.0 --></xsd:schema>
- 从以下版本开始：
- 1.5
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