PROBLEM TO BE SOLVED: To provide an image processing apparatus which solves problems caused when stress measurement is performed in preference without exception or job execution is performed in preference without exception at acceptance of a stress measuring job.SOLUTION: When a job is accepted in the middle of cardiac potential measurement in a state that acquisition of a plurality of cycles of stress measurement data required for stress measurement is not completed, a progress state of stress measurement in a cycle currently under the measurement is compared with an acceptance timing of the job, and with respect to acceptance of a job for which a time from the acceptance timing of the job to completion of stress measurement in the cycle currently under the measurement does not exceed a first setting value, the job is executed after completion of stress measurement in the cycle currently under the measurement, and with respect to acceptance of a job which exceeds the first setting value, stress measurement is interrupted to execute the job preferentially and stress measurement is restarted from the beginning of the interrupted cycle after completion of job execution.SELECTED DRAWING: Figure 8【課題】ストレス計測中のジョブ受付時に、一律にストレス計測を優先した場合や一律にジョブの実行を優先した場合に生じる問題を解消した画像処理装置等を提供する。【解決手段】心電位の測定中であってストレス計測に必要な複数周期分のストレス計測用データの取得が完了していない状態でジョブが受け付けられたとき、現在計測中の周期のストレス計測の進行状態とジョブの受付タイミングとを比較し、ジョブの受付タイミングから現在計測中の周期のストレス計測の完了までの時間が、予め設定された第1の設定値内のジョブの受け付けについては、現在計測中の周期のストレス計測の完了後にジョブを実行させ、第1の設定値を超えるジョブの受け付けについては、ストレス計測を中断しジョブを優先して実行させ、ジョブの実行完了後に、中断した周期の最初からストレス計測を再開させる制御を行う。【選択図】図8