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One of most irritating problems with previous versions of WiT is that often error handling is even more complicated than designing the image analysis algorithm itself. WiT 8.4 has several new features which should make error handling much easier. The most powerful new error handling feature allows any input object to an operator to be redirected to a specified 'label' operator when the operator failed in its execution. The following snapshot shows how this interface works:
In this example, if the 'invert' operator fails for any reason, the operators after 'invert' will not be executed. Instead, the input image that caused the error will be redirected to the 'badImage' label, where the data will be saved to a file and the execution loop will continue.