binary image has result but rgb image not

[Jayhello]

[libprotobuf WARNING google/protobuf/io/coded_stream.cc:78] The total number of bytes read was 597502990 I0110 09:56:18.573720 37 net.cpp:761] Ignoring source layer mnist I0110 09:56:18.760609 37 net.cpp:761] Ignoring source layer loss the following image has and result is not as good as raw OCR