Documentation
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Overview ¶
Package tiffutil provides utilities for TIFF image handling, specifically for converting EPO patent TIFF images to PNG format.
EPO patent images are often in TIFF format with various compressions:
- CCITT Group 3/4 (for black and white technical drawings)
- LZW compression
- CMYK color model (for color images)
This package uses github.com/hhrutter/tiff which provides enhanced TIFF support including CMYK color model handling.
Index ¶
Constants ¶
This section is empty.
Variables ¶
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Functions ¶
func BatchTIFFToPNG ¶
BatchTIFFToPNG converts multiple TIFF images to PNG format.
This is useful for converting all pages of a multi-page patent document. Returns a slice of PNG byte slices, one for each input TIFF.
If an error occurs during conversion of any image, processing stops and the error is returned with a nil slice (no partial results).
func DecodeTIFF ¶
DecodeTIFF decodes TIFF data and returns the image.
This is useful if you need to perform additional image processing beyond simple PNG conversion.
func TIFFToPNG ¶
TIFFToPNG converts TIFF image data to PNG format.
This function handles various TIFF formats commonly used in patent images:
- CCITT Group 3/4 compression (black and white)
- LZW compression
- CMYK color model
- Uncompressed TIFF
Landscape images (width > height) are automatically rotated 90 degrees counterclockwise to portrait orientation, which is standard for patent drawings.
Returns the PNG image data as bytes.
func TIFFToPNGNoRotate ¶
TIFFToPNGNoRotate converts TIFF to PNG without automatic rotation.
Use this function when you want to preserve the original orientation of the image without automatic landscape-to-portrait conversion.
Types ¶
This section is empty.
Source Files