An image acquisition device including: an imaging optical system forming two images having parallax; and an element acquiring the parallax images, the imaging optical system includes: a first negative lens group having negative refractive power; a first positive lens group having positive refractive power; and a second positive lens group having positive refractive power, the first negative lens group includes two negative lens groups disposed side by side in the parallax direction and having central axes respectively, the first positive lens group is a common lens group having a single central axis, and light rays emitted from the negative lens groups pass therethrough, the second positive lens group includes two positive lens groups disposed side by side in the parallax direction and having central axes respectively and the first positive lens group includes a moving lens group moved along the central axis of the first positive lens group.

An image forming apparatus and method for controlling an image forming apparatus is provided. The image forming apparatus includes a detecting unit, a projecting unit, and a control unit. The detecting unit is configured to detect an event that needs user work on the image forming apparatus. The projecting unit is configured to project an image onto a projection target. The control unit is configured to control projection by the projecting unit. When an event that needs user work on the image forming apparatus is detected, the projecting unit projects an image onto a projection target so that a target portion of the user work can be identified and also projects an instruction image for performing the user work.

Various example embodiments provide a note capture device comprising a writing surface, a camera mounted to view the writing surface, and electronic circuitry to capture images of said surface, or various alternative surfaces, including for example, a business card surface. Notes are captured upon a determination of completion of the note writing, and either stored or forwarded to an external device, or both. Handwriting recognition software is provided to enhance searchability of captured notes. Application software embodied on various devices provides the ability to view, browse, share, search and edit captured notes and associated data.

An image processing system in which a client apparatus transmits RAW image data to a server apparatus, receives a result developed by the server apparatus, and displays onto a display area. The client apparatus reduces the RAW image data to a size suitable to display, transmits to the server apparatus, and requests a development processing. The client apparatus also starts a transmission processing of original RAW image data to the server apparatus. While making adjustment of the development processing to reduced RAW image data, the client apparatus and the server apparatus execute a transmission and reception processing of the original RAW image data in parallel therewith. After the development processing of the reduced RAW image data, if there is a request from the client apparatus, the server apparatus also executes the development processing of the original RAW image data.