An image processing system includes a reference exposure section, a developing section, a film scanner, and an image processing apparatus. The reference exposure part carries out reference exposure by R light, G light, B light and gray light, by using an unexposed area of a photographic film as a reference exposure area, in order to form image information to be used for determining image processing conditions. The film scanner reads the reference exposure area developed by the developing section. A control section of the image processing apparatus calculates the image processing conditions, such as color correction conditions, from read data of the reference exposure area. An image processing section carries out image processing of frame images recorded on the photographic film, according to calculated image processing conditions.

In an ink-jet recording apparatus, when an intensity of the energy of electromagnetic waves of a predetermined region is E and an optical density of the image recorded on a recording medium based on an image signal is D, a controller conducts the image recording such that a characteristic curve representing a change of the optical density D for a logarithm of the energy intensity E becomes a monotone increasing function or a monotone decreasing function. When .gamma..sub.1, .gamma..sub.2 and .gamma..sub.3 are defined on the characteristic curve such that an inclination of a line connecting points corresponding to E.sub.1 and E.sub.2 is .gamma..sub.1, an inclination of a line connecting points corresponding to E.sub.3 and E.sub.4 is .gamma..sub.2, and an inclination of a line connecting points corresponding to E.sub.5 and E.sub.6 is .gamma..sub.3, the characteristic curve is determined so as to satisfy the following formulas: .vertline..gamma..sub.1.vertline.<.vertline..gamma..sub.2.vertline. and .vertline..gamma..sub.3.vertline.<.vertline..gamma..sub.2.vertline.. The image recording for the energy intensity E between E.sub.1 and E.sub.2 is conducted based on .gamma..sub.1, the image recording for the energy intensity E between E.sub.3 and E.sub.4 is conducted based on .gamma..sub.2, and the image recording for the energy intensity E between E.sub.5 and E.sub.6 is conducted based on .gamma..sub.3.

In a case where aberrations of a camera lens are large, and imaging-center coordinates and reading-center coordinates coincide with each other or are located in proximity to each other within an allowable range, and trimming was not effected or center trimming was not effected, correction parameters for correcting the aberrations of the camera lens and correction parameters for correcting the aberrations of a scanner lens are integrated, and the deterioration of image quality caused by the aberrations of the camera lens and the deterioration of image quality caused by the aberrations of the scanner lens are corrected simultaneously by using the integrated parameters.

An image display apparatus is provided that enables the chromaticity of a display screen of a display apparatus to be adjusted to the chromaticity desired by a user. The image display apparatus is formed by a backlight unit that is provided with a plurality of light sources and by an image display panel that is placed at a front surface of the backlight unit. The image display apparatus performs a monochrome display. In the image display apparatus, the light sources have at least three different types of luminescent colors that surround a target color on a chromaticity diagram.

An image reading apparatus in which highly accurate image reading can be carried out by using a line sensor. Light irradiated from a light source is divided into visible light or infrared light by a visible light filter or an infrared light filter, and irradiated onto an image frame of a photographic film. The light transmitted through the image frame is reflected by a mirror and made incident on a linear CCD via a lens unit. At this time, sub-scanning of the image frame is carried out by moving the mirror while the photographic film (i.e., image frame) is stopped, and a frame image is read by the linear CCD. In this way, image reading is carried out by using visible light and infrared light while the image frame is stopped. Accordingly, there is no positional displacement between visible light image data and infrared light image data, and the visible light image data can be corrected with high accuracy based on the infrared light image data.