Electronic device cases and lighting and power devices and modules are described. A case for a portable electronic device may include a rim portion defining an opening for a display of the portable electronic device and one or more light sources adjacent to the rim portion. A lighting device may include one or more light sources for illuminating a user's face during use of a camera of a portable electronic device, and a power member for providing power to the one or more light sources. A lighting module may include a plurality of lighting devices. A power module having a battery may be configured to provide power to a portable electronic device.

Shape measurement of a specular object even in the presence of multiple intra-object reflections such as those at concave regions of the object. Silhouettes of the object are extracted, by positioning the object between a camera and a background. A visual hull of the object is reconstructed based on the extracted silhouettes, such as by image capture of shadows of the object projected onto a screen, and image capture of reflections by the surface of the object of coded patterns onto the screen. The visual hull is used to distinguish between direct (single) reflections of the coded patterns at the surface of the object and multiple reflections. Only the direct (single) reflections are used to triangulate camera rays and light rays onto the surface of the object, with multiple reflections being excluded. The 3D surface shape may be derived by voxel carving of the visual hull, in which voxels along the light path of direct reflections are eliminated. For surface reconstruction of heterogeneous objects, which exhibit both diffuse and specular reflectivity, variations in the polarization state of polarized light may be used to separate between a diffuse component of reflection and a specular component.

Provided is an electronic device with high portability, a highly browsable electronic device, or an electronic device having a novel light source that can be used in shooting photographs and video. The electronic device includes a camera and a flexible display portion. The display portion has a first region and a second region. The first region has a function of emitting light to a photographic subject. The second region has a function of displaying an image of the photographic subject shot by the camera. The display portion can be bent so that the first region and the second region face in different directions.

Methods, systems, computer-readable media, and apparatuses for improved camera flash are presented. In some embodiments, a method includes performing an autofocus technique on a scene to obtain an autofocus output. The method also includes obtaining an ambient light measurement of the scene. The method further includes adjusting a sensitivity of an image sensor based at least in part on the autofocus output and the ambient light measurement. The method additionally includes, after adjusting the light sensitivity of the image sensor, illuminating the scene using a pre-flash.

In one example, a case that is configured to be removably attached to a smartphone includes a back panel that substantially covers a back face of the smartphone when the case is attached to the smartphone, the case defining a first opening configured and arranged so that when the case is attached to the smartphone, part of a display of the smartphone is visible by way of the first opening, and the case further including one or more light sources positioned along a side edge of the first opening, and the one or more light sources operable to illuminate part of an area to be imaged by a front-facing camera of the smartphone, and the back panel has a second opening that is aligned with a rear-facing camera of the smartphone when the case is attached to the smartphone, and the case further includes an electrical connector.

An electronic device with a camera and a display that can output light to achieve a desired appearance of skin tone is provided. The display outputs light having a color temperature for lighting during picture taking. The electronic device analyzes a color temperature value of a capturing environment and compares that value with a preset value, calculates a difference value according to the comparing, and controls the display to adjust the color temperature of the light accordingly. A color temperature adjusting method of the electronic device is also provided.

A method for controlling a screen of a terminal device to emit light includes: determining whether a screen flash lamp function is in an active state when the terminal device is in a photographing mode, wherein the screen flash lamp function enables the screen to serve as a flash lamp; and controlling the screen to emit light as a flash lamp according to a first color temperature correction scheme if the screen flash lamp function is in the active state, wherein the first color temperature correction scheme is configured to adjust a color temperature of the screen from an original color temperature to a target color temperature, and wherein the original color temperature is a color temperature when the screen emits light without color shift correction.

The present disclosure provides systems and methods for the measurement of signal intensity across a large dynamic range. The systems disclosed herein employ an iterative image collection strategy that utilizes structured illumination to achieve greater than 1,000,000-fold dynamic range measurements, representing a dramatic improvement over the prior art.

An LED-based lighting fixture sets or adjusts a parameter of a drive signal that is used to drive its LEDs to be more compatible with the camera system; the camera system sets or adjusts an image capture parameter to be more compatible with the LED-based lighting fixture, or a combination thereof. The drive signal may be a PWM signal with a variable PWM frequency and/or duty cycle, a variable DC signal, or any combination thereof. The parameter of the drive signal that may be set or adjusted includes, but is not limited to, a PWM period, PWM frequency, PWM duty cycle, amplitude of the active and inactive portions of the PWM signal, and the like. The image capture parameter that may be adjusted includes, but is not limited to, frame rate, frame period, integration time, gain, shutter type (i.e. rolling shutter, global shutter, etc.), and the like.