A component mounter, comprising: a camera configured to image a supply area (As) where multiple components are supplied in a bulk state; an image processing section configured to execute on image data acquired through imaging by the camera image processing for distinguishing areas of multiple feature portions of each of the components from areas other than the multiple feature portions in the image data based on brightness; and a state recognition section configured to recognize a supply state of each of the components in the supply area (As) based on a feature amount including at least one of a shape and an angle of each of the multiple feature portions of each of the components in the image data on which the image processing is executed, wherein one of the multiple feature portions in the image data on which the image processing is executed is defined as a reference feature portion, and another of the multiple feature portions which is included in a predetermined search range which is determined based on a position and the feature amount of the reference feature portion is defined as a candidate feature portion which can belong to an identical component of the multiple components together with the reference feature portion, and wherein the state recognition section is configured to determine whether the candidate feature portion belongs to the identical component together with the reference feature portion based on either of the feature amount or feature amounts of one or more the candidate feature portions which are included in the search range and a positional relationship between the reference feature portion and the candidate feature portion, and wherein the supply state in the supply area (As) includes at least one of component orientations indicating whether a thickness direction of the component constitutes an up-down direction, a degree of separation indicating whether the multiple components stay closer than a predetermined distance, and a pickup possibility, based on the component orientation or the degree of separation of components, indicating whether the components so staying can be picked up from the supply area (As). a camera configured to image a supply area (As) where multiple components are supplied in a bulk state; an image processing section configured to execute on image data acquired through imaging by the camera image processing for distinguishing areas of multiple feature portions of each of the components from areas other than the multiple feature portions in the image data based on brightness; and a state recognition section configured to recognize a supply state of each of the components in the supply area (As) based on a feature amount including at least one of a shape and an angle of each of the multiple feature portions of each of the components in the image data on which the image processing is executed, wherein one of the multiple feature portions in the image data on which the image processing is executed is defined as a reference feature portion, and another of the multiple feature portions which is included in a predetermined search range which is determined based on a position and the feature amount of the reference feature portion is defined as a candidate feature portion which can belong to an identical component of the multiple components together with the reference feature portion, and wherein the state recognition section is configured to determine whether the candidate feature portion belongs to the identical component together with the reference feature portion based on either of the feature amount or feature amounts of one or more the candidate feature portions which are included in the search range and a positional relationship between the reference feature portion and the candidate feature portion, and wherein the supply state in the supply area (As) includes at least one of component orientations indicating whether a thickness direction of the component constitutes an up-down direction, a degree of separation indicating whether the multiple components stay closer than a predetermined distance, and a pickup possibility, based on the component orientation or the degree of separation of components, indicating whether the components so staying can be picked up from the supply area (As).