diff --git a/mindspore/ccsrc/minddata/dataset/kernels/image/image_utils.cc b/mindspore/ccsrc/minddata/dataset/kernels/image/image_utils.cc
index 41949f220a3..c29589c5db7 100644
--- a/mindspore/ccsrc/minddata/dataset/kernels/image/image_utils.cc
+++ b/mindspore/ccsrc/minddata/dataset/kernels/image/image_utils.cc
@@ -719,7 +719,7 @@ Status NormalizePad(const std::shared_ptr<Tensor> &input, std::shared_ptr<Tensor
     if (rgb.size() != DEFAULT_IMAGE_CHANNELS) {
       RETURN_STATUS_UNEXPECTED("NormalizePad: input image is not in RGB.");
     }
-    for (int8_t i = 0; i < DEFAULT_IMAGE_CHANNELS; i++) {
+    for (uint32_t i = 0; i < DEFAULT_IMAGE_CHANNELS; i++) {
       float mean_c, std_c;
       RETURN_IF_NOT_OK(mean->GetItemAt<float>(&mean_c, {i}));
       RETURN_IF_NOT_OK(std->GetItemAt<float>(&std_c, {i}));
diff --git a/mindspore/ccsrc/minddata/dataset/kernels/image/lite_cv/warp_affine.cc b/mindspore/ccsrc/minddata/dataset/kernels/image/lite_cv/warp_affine.cc
index d614edcf229..ca46fd66413 100644
--- a/mindspore/ccsrc/minddata/dataset/kernels/image/lite_cv/warp_affine.cc
+++ b/mindspore/ccsrc/minddata/dataset/kernels/image/lite_cv/warp_affine.cc
@@ -44,8 +44,8 @@ static double GetDet3(double *src) {
   return a1 - a2 + a3;
 }
 
-static uint8_t IntToUChar(const int &v) {
-  return static_cast<uint8_t>(static_cast<unsigned>(v) <= UCHAR_MAX ? v : v > 0 ? UCHAR_MAX : 0);
+static uint8_t UIntToUChar(const uint32_t &v) {
+  return static_cast<uint8_t>(v <= UCHAR_MAX ? v : v > 0 ? UCHAR_MAX : 0);
 }
 
 static int16_t IntCastShort(const int &value) {
@@ -121,7 +121,7 @@ static const void *InitWBlock() {
   return (const void *)iWBlock;
 }
 
-static uint8_t CastToFixed(int v) { return IntToUChar(((v + (1 << (BITS1 - 1))) >> BITS1)); }
+static uint8_t CastToFixed(int v) { return UIntToUChar((static_cast<uint32_t>(v + (1 << (BITS1 - 1))) >> BITS1)); }
 
 static int BorderPolate(int value, int length, PaddBorderType borderType) {
   if (static_cast<unsigned>(value) < static_cast<unsigned>(length)) {