fc-plugin-codbi/com.github.xima_formcycle_entwicklerkreis.fc.plugin.codbi.logic.cb.ai.commons/DpiUtil

DpiUtil

object DpiUtil

Stateless utility for reading and writing DPI (dots per inch) metadata in image files.

Supports PNG (pHYs chunk) and JPEG (app0JFIF segment) metadata formats. Falls back to a default of 300 DPI when metadata is missing or unreadable.

Functions

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fun readImageDPI(imageFile: File, logSignature: String = DEFAULT_LOG_SIGNATURE): Int

Reads DPI metadata from an image file.

fun readImageDPI(imageBytes: ByteArray, logSignature: String = DEFAULT_LOG_SIGNATURE): Int

Reads DPI metadata from image bytes.

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fun writeImageWithDPI(image: BufferedImage, outputFile: File, dpi: Int = DEFAULT_DPI, logSignature: String = DEFAULT_LOG_SIGNATURE)

Writes a BufferedImage to a PNG file with proper DPI metadata. This ensures Tesseract gets the correct resolution information.