also improves page constructor performance by removing linq and invoking stringbuilder directly. removes page rotation overhead by skipping multiplication for non-rotated pages and using cached transformation matrices for rotations. removes linq from filter provider and shares instances of filter types.
package license url is deprecated in favour of package license expression but nuget doesn't seem to support expressions properly for published packages yet so we'll keep the deprecated url for the time being. having both url and expression causes the build to fail.
small obvious performance improvements for file header passing and getting the encoding information using the existing reverse name to code map.
- Create a TextBlock class
- Creates IPageSegmenter
- Add other useful distances: angle, etc.
- Update RecursiveXYCut
- With IPageSegmenter and TextBlock
- Make XYNode and XYLeaf internal
- Optimise (faster) NearestNeighbourWordExtractor and isolate the clustering algorithms for use outside of this class
- Implement a Docstrum inspired page segmentation algorithm
Text edges are where words have either there BoundingBox's left, right or mid coordinate aligned on the same vertical line.
Useful to detect tables, justified text, lists, etc.
an inline image in a pdf content stream starts with the bi tag, then id declares the start of image data and ei the end. attempting to parse the bytes after the id tag as usual resulted in errors. this change adds special case handling for inline images.
* trial azure pipelines
[skip ci]
* use vs2017
* build pr commits
* include codecov and update test nuget
* add codecov call
* add publish test results step
* include coverlet package for test coverage and allow coverlet dynamic public types
* add azure pipelines badge and remove appveyor badge
* add nuget pack step
* use build configuration variable for nuget pack and move after build
* fix path to package to pack
* change nuget to dotnet pack
* remove old codecov related tools
