1. A detection control device comprising: a processor that is configured to implement as: an imaged image acquiring unit that acquires an imaged image resulting from imaging a specimen that is to be subjected to detection of a target cell; a setting unit that sets a plurality of processing target regions in the imaged image; a distributing unit that distributes, in accordance with a distribution amount of data to each of a plurality of processing units that detect the target cell in an image region, the plurality of processing target regions to the plurality of processing units; a processing result acquiring unit that acquires, from each of the plurality of processing units, a result of a process of detecting the target cell in the processing target regions distributed to the respective plurality of processing units, wherein the distributing unit sets the distribution amount of data to each of the plurality of processing units to increase with an increase in a performance value of each of the plurality of processing units, by: determining, for each of the plurality of processing target regions, a load index value corresponding to a size of a load of the process of detecting the target cell; and determining load index values to be distributed to each of the plurality of processing units, based on a sum total of the load index values of the plurality of processing target regions and the performance value of each of the plurality of processing units, and wherein the distributing unit distributes one or more processing target regions selected from the plurality of processing target regions, based on the sum of the load index values determined for each of the plurality of processing units.