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-rw-r--r--pdf-as-pdfbox/src/main/java/at/gv/egiz/pdfas/lib/impl/stamping/pdfbox/PDFAsVisualSignatureBuilder.java3
1 files changed, 2 insertions, 1 deletions
diff --git a/pdf-as-pdfbox/src/main/java/at/gv/egiz/pdfas/lib/impl/stamping/pdfbox/PDFAsVisualSignatureBuilder.java b/pdf-as-pdfbox/src/main/java/at/gv/egiz/pdfas/lib/impl/stamping/pdfbox/PDFAsVisualSignatureBuilder.java
index 2b587d72..927469b1 100644
--- a/pdf-as-pdfbox/src/main/java/at/gv/egiz/pdfas/lib/impl/stamping/pdfbox/PDFAsVisualSignatureBuilder.java
+++ b/pdf-as-pdfbox/src/main/java/at/gv/egiz/pdfas/lib/impl/stamping/pdfbox/PDFAsVisualSignatureBuilder.java
@@ -596,7 +596,8 @@ public class PDFAsVisualSignatureBuilder extends PDVisibleSigBuilder {
logger.debug("Scaling image to: " + iwidth + " x "
+ iheight);
- if (img.getColorModel().hasAlpha()) {
+ if (img.getAlphaRaster() == null &&
+ img.getColorModel().hasAlpha()) {
img = ImageUtils.removeAlphaChannel(img);
}
//img = ImageUtils.convertRGBAToIndexed(img);