diff --git a/src/main/java/jp/riken/neurodata/tools/BioFormatsImageInfo.java b/src/main/java/jp/riken/neurodata/tools/BioFormatsImageInfo.java
index 2f3073f..3b2828b 100644
--- a/src/main/java/jp/riken/neurodata/tools/BioFormatsImageInfo.java
+++ b/src/main/java/jp/riken/neurodata/tools/BioFormatsImageInfo.java
@@ -29,7 +29,6 @@ public class BioFormatsImageInfo {
 
     // read basic metadata
     int seriesCount = reader.getSeriesCount();
-    metadata.put("count", seriesCount);
     MetadataStore ms = reader.getMetadataStore();
     MetadataRetrieve mr = ms instanceof MetadataRetrieve ? (MetadataRetrieve) ms : null;
     for (int j = 0; j < seriesCount; j++) {
@@ -48,7 +47,6 @@ public class BioFormatsImageInfo {
       // resolutions
       if (resolutionCount > 1) {
         Map<String, Object> resolutionsMetadata = new LinkedHashMap<String, Object>();
-        resolutionsMetadata.put("count", resolutionCount);
         for (int i = 0; i < resolutionCount; i++) {
           reader.setResolution(i);
           resolutionsMetadata.put(String.format("resolution[%d]", i),