diff --git a/source/MaaFramework/Vision/OCRer.cpp b/source/MaaFramework/Vision/OCRer.cpp
index 0796cfa5c..5a95fc470 100644
--- a/source/MaaFramework/Vision/OCRer.cpp
+++ b/source/MaaFramework/Vision/OCRer.cpp
@@ -57,7 +57,7 @@ OCRer::ResultsVec OCRer::predict_det_and_rec(const cv::Rect& roi) const
     fastdeploy::vision::OCRResult ocr_result;
     bool ret = ocrer_->Predict(image_roi, &ocr_result);
     if (!ret) {
-        LogWarn << "inferencer return false" << VAR(ocrer_) << VAR(image_) << VAR(roi) << VAR(image_roi);
+        LogWarn << "inferencer return false" << VAR(ocrer_) << VAR(image_.size()) << VAR(roi) << VAR(image_roi.size());
         draw_result(roi, {});
         return {};
     }
@@ -116,7 +116,7 @@ OCRer::Result OCRer::predict_only_rec(const cv::Rect& roi) const
 
     bool ret = recer_->Predict(image_roi, &rec_text, &rec_score);
     if (!ret) {
-        LogWarn << "recer_ return false" << VAR(recer_) << VAR(image_) << VAR(roi) << VAR(image_roi);
+        LogWarn << "recer_ return false" << VAR(recer_) << VAR(image_.size()) << VAR(roi) << VAR(image_roi.size());
         draw_result(roi, {});
         return {};
     }
diff --git a/source/MaaFramework/Vision/TemplateComparator.cpp b/source/MaaFramework/Vision/TemplateComparator.cpp
index 5336cd6c6..48a0143ac 100644
--- a/source/MaaFramework/Vision/TemplateComparator.cpp
+++ b/source/MaaFramework/Vision/TemplateComparator.cpp
@@ -9,7 +9,7 @@ MAA_VISION_NS_BEGIN
 TemplateComparator::ResultsVec TemplateComparator::analyze(const cv::Mat& lhs, const cv::Mat& rhs) const
 {
     if (lhs.size() != rhs.size()) {
-        LogError << "lhs.size() != rhs.size()" << VAR(lhs) << VAR(rhs);
+        LogError << "lhs.size() != rhs.size()" << VAR(lhs.size()) << VAR(rhs.size());
         return {};
     }
 
diff --git a/source/MaaFramework/Vision/TemplateMatcher.cpp b/source/MaaFramework/Vision/TemplateMatcher.cpp
index eca455fab..c878b81bb 100644
--- a/source/MaaFramework/Vision/TemplateMatcher.cpp
+++ b/source/MaaFramework/Vision/TemplateMatcher.cpp
@@ -53,7 +53,7 @@ TemplateMatcher::ResultsVec TemplateMatcher::analyze() const
 TemplateMatcher::ResultsVec TemplateMatcher::foreach_rois(const cv::Mat& templ) const
 {
     if (templ.empty()) {
-        LogWarn << name_ << "template is empty" << VAR(param_.template_paths) << VAR(templ);
+        LogWarn << name_ << "template is empty" << VAR(param_.template_paths) << VAR(templ.size());
         return {};
     }
 
diff --git a/source/include/Utils/LoggerUtils.h b/source/include/Utils/LoggerUtils.h
index 83e6117cb..46c18526c 100644
--- a/source/include/Utils/LoggerUtils.h
+++ b/source/include/Utils/LoggerUtils.h
@@ -24,6 +24,11 @@
 #include "Ranges.hpp"
 #include "Time.hpp"
 
+namespace cv
+{
+class Mat;
+}
+
 MAA_LOG_NS_BEGIN
 
 #ifdef __GNUC__
@@ -81,7 +86,10 @@ struct StringConverter
     std::string operator()(T&& value) const
     {
         if constexpr (std::is_function_v<std::remove_pointer_t<std::decay_t<T>>>) {
-            static_assert(!sizeof(T), "Function type is not supported");
+            static_assert(!sizeof(T), "Function type is not supported.");
+        }
+        else if constexpr (std::same_as<cv::Mat, std::decay_t<T>>) {
+            static_assert(!sizeof(T), "cv::Mat has too much data, don't print it!");
         }
         else if constexpr (std::same_as<std::filesystem::path, std::decay_t<T>>) {
             return path_to_utf8_string(std::forward<T>(value));