摘要:
A lens barrel includes an interlocking key member, extending in an optical-axis direction, for transferring a rotary force for moving an optical system and a rotary member serving to hold the interlocking key member and rotating about the optical axis. The rotary member has an inserted portion into which the interlocking key member is inserted and an engagement portion for regulating a movement of the interlocking key member in the optical-axis direction. The interlocking key member has an engaged portion capable of engaging with the engagement portion when inserted into the inserted portion of the rotary member.
摘要:
A method and an apparatus for processing image information by converting binary image data into multi-level image data. After conversion the image data are subjected to a smoothing process to avoid apparent loss in image quality.
摘要:
An automatic focusing camera system has a lens barrel with a focusing optical system, and a camera body. A focus detecting device in the camera body outputs a focus detecting signal. A calculating device in the camera body calculates driving information of the focusing optical system based upon the focus detecting signal. A driving device in the lens barrel has a driving power source and a transmission member for transmitting driving power to the focusing optical system to drive it based upon the driving information. First and second signal generators in the lens barrel, at respective final and initial stages of the transmission member, generate first and second driving signals in response to driving of the focusing optical system. A driving control device in the lens barrel controls position of the focusing optical system based upon the first driving signal and the driving information, and controls velocity of the driving power source based upon the second driving signal.
摘要:
It is determined whether an object pixel in entered image data resides on (a) part of a black character or line, (b) not on part of a black character or line but in close proximity thereto, (c) neither part of nor in close proximity to a black character or line. When it is determined that (a) holds, the object pixel is recorded using dark black ink only. When it is determined that (b) holds, a pixel comprising various color components is recorded using ink whose density is lower that that of ink having a designated density. When it is determined that (c) holds, namely that the object pixel is remote from a black character or line, the object pixel is recorded using the ink of the designated density.
摘要:
There is disclosed a color image processing method and apparatus therefor, in which the input image data are converted into a color coordinate system represented by luminosity and hue, for example L*a*b* space. The colors reproducible on the output device, for example a printer, are also converted into this coordinate system. An average value is calculated over plural pixels in the vicinity of an object pixel to be digitized, and plural average values are then obtained by including the object pixel selected at each of the reproducible colors. The input image signal is digitized to the closest one of the plural average signals. The digitization error generated upon digitization is distributed to the succeeding pixels with weighted ratios. This method achieves faithful color reproduction, matching the colors reproducible on the recording or display device.
摘要翻译:公开了一种彩色图像处理方法及其装置,其中输入图像数据被转换成由亮度和色相表示的颜色坐标系,例如L * a * b *空间。 在输出设备(例如打印机)上可再现的颜色也被转换成该坐标系。 在要数字化的对象像素附近的多个像素上计算平均值,然后通过包括在每个可再现颜色处选择的对象像素来获得多个平均值。 输入图像信号被数字化为多个平均信号中最接近的一个。 数字化后产生的数字化错误,以加权比率分配给后续像素。 该方法实现了忠实的色彩再现,使得可以在记录或显示设备上重现的颜色相匹配。
摘要:
A lens barrel comprises a fixed barrel; a photographing lens which requires a first torque for driving the lens along the fixed barrel; and a surface wave motor including a fixed body and a moving body which is rotated relative to the fixed body by excitation for driving the lens. When the motor is not excited, a second torque is exerted between the moving body and the fixed body to prevent the relative rotation. The moving body is caused to rotate by a torque greater than the second torque. A friction generating device provided between the fixed barrel and the fixed body exerts a third torque to prevent relative rotation between the fixed barrel and the fixed body. The fixed body can rotate with respect to the fixed barrel only when the fixed body is caused to rotate by a torque greater than the third torque. A manual operation member drives the photographing lens by a manual operation; and a friction clutch provided between the manual operation member and the fixed body exerts a fourth torque. The manual operation member can rotate with respect to the fixed body only when caused to rotate by a torque greater than the fourth torque.
摘要:
A hand-held recording apparatus for image recording on a recording medium by manual movement comprises a main body, a thermal head provided in the main body and having plural heat-generating elements for image recording on the recording medium, an ink sheet positioned feedable to a recording position by the thermal head and bearing ink which is transferred onto the recording medium in response to the heat generation of the thermal head, a first elastic member for biasing the thermal head to the recording medium, and a second elastic member for biasing the main body having the thermal head therein to the recording medium.The elastic force of the second elastic member is selected larger than that of the first elastic member.
摘要:
An image processing apparatus has an image reading unit, a two dimensional smoothing circuit, a dither processing circuit, a binarizing circuit, a discriminator, a switch and a printer. A moire suppressed binary signal from the dither processing circuit is supplied to the printer via the switch when the discriminator discriminates a pixel of interest as a dot region. However, when the discriminator discriminates the pixel of interest as a line image region, a binary signal from the binarizing circuit is supplied to the printer via the switch.
摘要:
An image processing apparatus which has a function of simultaneously or selectively copy an image displayed on a display screen and an image on an original at an arbitrary location is disclosed. This apparatus includes a display unit which can be used as an original and be simultaneously used with the original and further can display at an arbitrary location on a placing unit for placing the original.
摘要:
An image processing apparatus has a slice binarizing circuit, a dither process circuit, maximum and minimum density measuring circuits, a comparator for determining if each image area is a binary or halftone image area, and a RAM for storing an output from the comparator. An average value of the difference between the maximum and minimum densities can be calculated, and outputs from the slice binarizing circuit and the dither process circuit can be ANDed or ORed in accordance with a comparison result of the average value with a reference value. An image density gradient or image tone data in an image block can also be calculated to allow multi-level quantization and optimal image reproduction.